Name: Copernicus Webinar and Colloquium Series
Start: 2020-07-09T10:00:00+02:00
End: 2025-01-31T16:00:00+01:00
Location: No location set

Monday, July 6, 2020
Tuesday, July 7, 2020
Wednesday, July 8, 2020
Thursday, July 9, 2020
3:00 PM Relieving the Hubble tension with primordial magnetic fields - Levon Pogosian (Simon Fraser U.)
Relieving the Hubble tension with primordial magnetic fields
- Levon Pogosian (Simon Fraser U.)
3:00 PM - 4:00 PM
The standard cosmological model determined from the accurate cosmic microwave background measurements made by the Planck satellite implies a value of the Hubble constant H0 that is 4.2 standard deviations lower than the one determined from Type Ia supernovae. The Planck best fit model also predicts lower values of the matter density fraction Om and clustering amplitude S8 compared to those obtained from the Dark Energy Survey Year 1 data. We show that accounting for the additional inhomogeneities in the baryon density induced by primordial magnetic fields present in the plasma prior to recombination can help to solve both the H0 and the S8-Om tensions. The required field strength is just what is needed to explain the existence of galactic, cluster, and extragalactic magnetic fields without relying on dynamo amplification. Our results show clear evidence for this effect and motivate further detailed studies of primordial magnetic fields, setting several well-defined targets for future observations.
4:00 PM informal discussion/coffee time
informal discussion/coffee time
4:00 PM - 5:00 PM
Friday, July 10, 2020
Saturday, July 11, 2020
Sunday, July 12, 2020

Monday, August 3, 2020
Tuesday, August 4, 2020
Wednesday, August 5, 2020
Thursday, August 6, 2020
3:00 PM Origin of matter and gravitational wave - Hitoshi Murayama
Origin of matter and gravitational wave
- Hitoshi Murayama
3:00 PM - 4:00 PM
We exist today thanks to the asymmetry between matter and anti-matter. Its origin, however, has been one of the major mysteries in cosmology and particle physics. Arguably the leading theory called leptogenesis is that the asymmetry is generated by the decay of heavy neutrinos at the temperature above 10^9 GeV. I review this theory and point out that the gravitational wave will be an important test. If time permits, I will also discuss a different origin of the asymmetry which is also tied to the origin of dark matter, again with a gravitational wave signature.
4:00 PM informal discussion/Coffee time
informal discussion/Coffee time
4:00 PM - 5:00 PM
Friday, August 7, 2020
Saturday, August 8, 2020
Sunday, August 9, 2020

Monday, August 17, 2020
Tuesday, August 18, 2020
Wednesday, August 19, 2020
Thursday, August 20, 2020
3:00 PM alpha'-Cosmological tale: String Cosmology backgrounds from Classical String Geometry - Guilherme Franzmann
alpha'-Cosmological tale: String Cosmology backgrounds from Classical String Geometry
- Guilherme Franzmann
3:00 PM - 4:00 PM
In this talk, I intend to give a pedagogical, nonetheless biased, introduction to String Cosmology. After briefly reviewing the Lambda-CDM model and motivating inflation, we will remind ourselves that early universe cosmology remains singular and waiting for alternatives. That will be our cue to consider string theory to define our gravity sector and string thermodynamics to define our matter sector. We will learn how that doesn't work, unless we consider more string corrections (in fact, infinity of them!). Once we are stringy enough, we will be able to build a full cosmological model that is non-singular and already poses itself as an alternative to inflation at the background level.
4:00 PM informal discussion/coffee time
informal discussion/coffee time
4:00 PM - 5:00 PM
Friday, August 21, 2020
Saturday, August 22, 2020
Sunday, August 23, 2020

Monday, September 14, 2020
Tuesday, September 15, 2020
Wednesday, September 16, 2020
6:00 PM Signals of a Quantum Universe - Daniel Green
Signals of a Quantum Universe
- Daniel Green
6:00 PM - 7:00 PM
The idea that structure in the universe was created from quantum mechanical vacuum fluctuations during inflation is very compelling, but unproven. Testing this proposal is challenging because the universe we observe is effectively classical. I will explain the origin of this challenge and how it can be circumvented if we observe equilateral primordial non-Gaussianity. In particular, we will see that the absence of an accompanying folded non-Gaussian signal is only possible (assuming locality) with quantum vacuum fluctuations.
7:00 PM informal discussion/coffee time
informal discussion/coffee time
7:00 PM - 8:00 PM
Thursday, September 17, 2020
Friday, September 18, 2020
Saturday, September 19, 2020
Sunday, September 20, 2020

Monday, October 5, 2020
Tuesday, October 6, 2020
Wednesday, October 7, 2020
Thursday, October 8, 2020
10:00 AM Probing extremely small-scale primordial perturbations by gravitational waves - Suyama Teruaki
Probing extremely small-scale primordial perturbations by gravitational waves
- Suyama Teruaki
10:00 AM - 11:00 AM
According to the theory of inflation, the primordial perturbations existed over a wide range of length scales from meter size at the smallest scale up to at least the Hubble horizon on the largest scale. Stochastic gravitational waves have been attracting a lot of interest recently as a new powerful probe of the primordial perturbations on very small scales. In this talk, I will give a brief overview in this field and present a recent search for such gravitational waves by using LIGO O2 data and its implications.
Friday, October 9, 2020
Saturday, October 10, 2020
Sunday, October 11, 2020

Monday, October 12, 2020
Tuesday, October 13, 2020
Wednesday, October 14, 2020
Thursday, October 15, 2020
8:00 PM Detecting the thermal effect of acceleration in an Analog system. - Bill Unruh
Detecting the thermal effect of acceleration in an Analog system.
- Bill Unruh
8:00 PM - 9:00 PM
Given the intimate connection of gravity and its dependence on the changing flow of time from place to place, it is surprizing that General Relativistic effects can be modeled in other systems. In 1981 I showed that even the Hawking effect has analogies in other systems, which has spawned an active experimental effort in the past few decades. A harder case has turned out to to model the thermal effect that an accelerated detector in the vacuum. Following Bell and Leinaas in 1983, we showed that a circularly accelerated detector can also show a themal effect. This talks will present a way of implimenting a broad band detector of the quantum fluctuations in a BEC which may also be just realisable with an interferometric detector by borrowing techniques from LIGO, with the interferometer in frequency space rather than in real space.
Friday, October 16, 2020
Saturday, October 17, 2020
Sunday, October 18, 2020

Monday, October 19, 2020
Tuesday, October 20, 2020
Wednesday, October 21, 2020
Thursday, October 22, 2020
7:00 PM Pulsar Timing Arrays: The Next Window to Open on the Gravitational-Wave Universe - Chiara Mingarelli
Pulsar Timing Arrays: The Next Window to Open on the Gravitational-Wave Universe
- Chiara Mingarelli
7:00 PM - 8:00 PM
Galaxy mergers are a standard aspect of galaxy formation and evolution, and most (likely all) large galaxies contain supermassive black holes. As part of the merging process, the supermassive black holes should in-spiral together and eventually merge, generating a background of gravitational radiation in the nanohertz to microhertz regime. An array of precisely timed pulsars spread across the sky can form a galactic-scale gravitational wave detector in the nanohertz band. I describe the current efforts to develop and extend the pulsar timing array concept, together with recent limits which have emerged from international efforts to constrain astrophysical phenomena at the heart of supermassive black hole mergers.
Friday, October 23, 2020
Saturday, October 24, 2020
Sunday, October 25, 2020

Monday, October 26, 2020
Tuesday, October 27, 2020
Wednesday, October 28, 2020
3:00 PM The status of cosmological tensions after Planck - Silvia Galli (IAP)
The status of cosmological tensions after Planck
- Silvia Galli (IAP)
3:00 PM - 4:00 PM
The results of the ESA Planck satellite have enabled extrordinary progress in our understanding of the universe in the past few years. Furthermore, its (sub)-percent measurement of cosmological parameters allowed us to discover a few inconsistencies with other astrophysical probes, which might point towards a crisis of the current standard model of cosmology. In this talk, I will review some of these inconsistencies and highlight the prospects for the future.
4:00 PM informal discussion
informal discussion
4:00 PM - 5:00 PM
Thursday, October 29, 2020
Friday, October 30, 2020
Saturday, October 31, 2020
Sunday, November 1, 2020

Monday, November 9, 2020
Tuesday, November 10, 2020
Wednesday, November 11, 2020
Thursday, November 12, 2020
Friday, November 13, 2020
Saturday, November 14, 2020
Sunday, November 15, 2020

Monday, November 16, 2020
Tuesday, November 17, 2020
3:00 PM Exploring the early universe with the stochastic background of induced gravitational waves - Guillem Domenech (Padova)
Exploring the early universe with the stochastic background of induced gravitational waves
- Guillem Domenech (Padova)
3:00 PM - 4:00 PM
I will discuss the current status of the secondary gravitational waves induced by the curvature perturbation and why they might be an important source of the cosmological stochastic gravitational wave background. As a practical example, I will use the latest NANOGrav results on the stochastic background of nanohertz gravitational waves to constrain the equation of state parameter of the early universe and the mass of the associated primordial black holes.
Wednesday, November 18, 2020
Thursday, November 19, 2020
Friday, November 20, 2020
Saturday, November 21, 2020
Sunday, November 22, 2020

Monday, November 23, 2020
4:00 PM New Physics and the Black Hole Mass Gap - Djuna Croon (TRIUMF)
New Physics and the Black Hole Mass Gap
- Djuna Croon (TRIUMF)
4:00 PM - 5:00 PM
In this talk I will demonstrate the potential of the black hole mass gap to probe new physics. The mass gap, in which no black holes can be formed, is a standard prediction of stellar structure theory. I will show that new physics that couples to the Standard Model can act as an additional source of energy loss in the cores of heavy stars, dramatically altering their evolution, resulting in large shifts of the gap. I will also discuss how new contributions may modify the stellar equation of state. The gravitational wave observations by the LIGO/Virgo collaboration will bring the edges of the black hole mass gap in sight in the coming years, making this a promising novel probe of new physics.
Tuesday, November 24, 2020
Wednesday, November 25, 2020
Thursday, November 26, 2020
Friday, November 27, 2020
Saturday, November 28, 2020
Sunday, November 29, 2020

Monday, December 7, 2020
Tuesday, December 8, 2020
Wednesday, December 9, 2020
Thursday, December 10, 2020
Friday, December 11, 2020
10:00 AM A look at axion inflation in string theory - Alexander Westphal (DESY)
A look at axion inflation in string theory
- Alexander Westphal (DESY)
10:00 AM - 11:00 AM
We will take a look at axion inflation in string theory, taking a somewhat eclectic approach guided by some mechanism classes and (semi-)explicit examples. Looking at models with either 1 or 2 axions, we will argue that (up to manifestly tuning for small-field models) inflation can arise from 2 different mechanisms - either monodromy, or hybrid inflation. Cautiously incorporating both known limits of top-down theory knowledge as well as bottom-up ‘effective quantum gravity’ conjectural constraints, should lead to a ‘theory error blob’ of CMB observable predictions describing the ‘mechanism equivalence class’. We outline this using harmonic hybrid inflation as a representative of 2-axion hybrid inflation, and then describe a systematic method of propagating the ‘theory error’ to observable predictions using machine learning and information geometry
Saturday, December 12, 2020
Sunday, December 13, 2020

Monday, December 14, 2020
3:00 PM Black Holes Are Finally in Vogue - Abraham (Avi) Loeb (Harvard University)
Black Holes Are Finally in Vogue
- Abraham (Avi) Loeb (Harvard University)
3:00 PM - 4:00 PM
With black holes, what you see is not what you get. They are extreme structures of spacetime that represent the ultimate prison, from where even light cannot escape. After decades of being a subject of mathematical interest, recently black holes became a topic of direct observational studies, for which two Nobel prizes were awarded over the past three years. I will describe some of the most exciting frontiers in current multi-messenger studies of astrophysical black holes.
Tuesday, December 15, 2020
Wednesday, December 16, 2020
Thursday, December 17, 2020
Friday, December 18, 2020
Saturday, December 19, 2020
Sunday, December 20, 2020

Monday, December 21, 2020
Tuesday, December 22, 2020
Wednesday, December 23, 2020
Thursday, December 24, 2020
Friday, December 25, 2020
Saturday, December 26, 2020
Sunday, December 27, 2020

Monday, December 28, 2020
Tuesday, December 29, 2020
Wednesday, December 30, 2020
Thursday, December 31, 2020
Friday, January 1, 2021
Saturday, January 2, 2021
Sunday, January 3, 2021

Monday, January 4, 2021
Tuesday, January 5, 2021
Wednesday, January 6, 2021
Thursday, January 7, 2021
Friday, January 8, 2021
Saturday, January 9, 2021
Sunday, January 10, 2021

Monday, January 11, 2021
Tuesday, January 12, 2021
1:00 PM Quantum fluctuations and new instantons - Viatcheslav Mukhanov (LMU)
Quantum fluctuations and new instantons
- Viatcheslav Mukhanov (LMU)
1:00 PM - 2:00 PM
I will discuss how quantum fluctuations modify the Coleman theory of the decay of false vacuum
Wednesday, January 13, 2021
Thursday, January 14, 2021
Friday, January 15, 2021
Saturday, January 16, 2021
Sunday, January 17, 2021

Monday, January 18, 2021
Tuesday, January 19, 2021
Wednesday, January 20, 2021
Thursday, January 21, 2021
Friday, January 22, 2021
Saturday, January 23, 2021
Sunday, January 24, 2021

Monday, February 8, 2021
Tuesday, February 9, 2021
3:00 PM Quantum gravity predictions for cosmology: from the beginning to dynamical dark energy. - Christof Wetterich (Universitat Heidelberg)
Quantum gravity predictions for cosmology: from the beginning to dynamical dark energy.
- Christof Wetterich (Universitat Heidelberg)
3:00 PM - 4:00 PM
Wednesday, February 10, 2021
Thursday, February 11, 2021
Friday, February 12, 2021
Saturday, February 13, 2021
Sunday, February 14, 2021

Monday, February 15, 2021
Tuesday, February 16, 2021
Wednesday, February 17, 2021
Thursday, February 18, 2021
10:00 AM Axions, Dark Matter, and the Primordial Density Perturbation - Takeshi Kobayashi (Nagoya University)
Axions, Dark Matter, and the Primordial Density Perturbation
- Takeshi Kobayashi (Nagoya University)
10:00 AM - 11:00 AM
I will present new ideas about how the QCD axion or axion-like particles can make up the dark matter of our universe, and/or explain the origin of the primordial density perturbation. For axion dark matter, I will introduce a novel production mechanism that invokes a kinetic mixing between the axion and the inflaton. I will show that this mechanism opens up new windows in the axion parameter space, where conventional scenarios such as vacuum misalignment cannot work. The impact of primordial electromagnetic fields on the axion window will also be discussed. For the density perturbation, I will demonstrate that an axion-like particle coupled to a new confining gauge group is a perfect candidate of a curvaton, and that the resulting density perturbation has distinct signatures that are testable in upcoming experiments.
Friday, February 19, 2021
Saturday, February 20, 2021
Sunday, February 21, 2021

Monday, February 22, 2021
Tuesday, February 23, 2021
2:00 PM Gravitational waves from first-order phase transition during inflation - Haipeng An (Tsinghua University)
Gravitational waves from first-order phase transition during inflation
- Haipeng An (Tsinghua University)
2:00 PM - 3:00 PM
I will talk about the properties of the gravitational wave (GW) signals produced by first-order phase transitions during the inflation era. I will show that the power spectrum of the GW oscillates with its wave number. This oscillatory feature corresponds to the instantaneous nature of the first-order phase transition. I will also show that we can get information about how the universe evolves during and after inflation from the slopes of different parts of the spectrum. I will also present simple models that first-order phase transition can happen and finish during inflation. I will also show that this signal can be observed directly by future terrestrial and spatial GW detectors and through the B-mode spectrum in CMB.
Wednesday, February 24, 2021
Thursday, February 25, 2021
Friday, February 26, 2021
Saturday, February 27, 2021
Sunday, February 28, 2021

Monday, March 22, 2021
Tuesday, March 23, 2021
Wednesday, March 24, 2021
Thursday, March 25, 2021
2:00 PM Decoding and bootstrapping cosmological fluctuations - Guilherme L. Pimentel (Leiden U.)
Decoding and bootstrapping cosmological fluctuations
- Guilherme L. Pimentel (Leiden U.)
2:00 PM - 3:00 PM
I will review our current understanding of the initial conditions of the universe, and describe what information is available from current and future measurements of cosmological correlation functions. Then I will describe a new method to compute and constrain the possible shapes of those correlation functions, assuming they were generated during inflation. This ``cosmological bootstrap” draws inspiration from the modern scattering amplitudes program in flat space, as well as the conformal bootstrap of phase transitions. After discussing primordial scalar fluctuations, I will also explain how the consistent propagation of gravitational waves imposes further constraints on the structure of spinning primordial correlators.
Friday, March 26, 2021
Saturday, March 27, 2021
Sunday, March 28, 2021

Monday, April 12, 2021
Tuesday, April 13, 2021
3:00 PM What the Hubble tension really is and how (not) to solve it - Sunny Vagnozzi (Cambridge University)
What the Hubble tension really is and how (not) to solve it
- Sunny Vagnozzi (Cambridge University)
3:00 PM - 4:00 PM
Despite being arguably one of the hottest topics in the recent literature, there are several widely spread misconceptions concerning what the Hubble tension really is. Moreover, leaving these misconceptions aside, no compelling model to solve the Hubble tension has been found so far, despite a huge number of attempts (and false alarms). I will begin by explaining what the Hubble tension really is, presenting three different interpretations in order of increasing "correctness". I will then discuss why so many proposed models have failed so far, and what in my opinion is the way forward towards constructing a realistic solution to the tension. I will close by presenting the "10 commandments" which I believe every "Hubble hunter" should abide by.
Wednesday, April 14, 2021
Thursday, April 15, 2021
Friday, April 16, 2021
Saturday, April 17, 2021
Sunday, April 18, 2021

Monday, April 19, 2021
Tuesday, April 20, 2021
3:00 PM New Probes of Large-Scale Structure - Scott Dodelson (Carnegie Mellon U.)
New Probes of Large-Scale Structure
- Scott Dodelson (Carnegie Mellon U.)
3:00 PM - 4:00 PM
Progress in cosmology over the past few decades has been quantified by the extent to which we can accurately measure “two-point functions” such as the power spectrum of galaxies; the shear-shear- correlation function; galaxy-galaxy lensing; and most famously the C_l’s of the anisotropies in the cosmic microwave background. New statistics are emerging though that offer potential to infer even more information about the universe. I will open by asking your opinions about what information is most important that is not listed above. Then, I will give my opinion and share some proposals for extending this relatively new class of statistics to learn about the large-scale structure of the universe.
Wednesday, April 21, 2021
Thursday, April 22, 2021
Friday, April 23, 2021
Saturday, April 24, 2021
Sunday, April 25, 2021

Monday, April 26, 2021
Tuesday, April 27, 2021
Wednesday, April 28, 2021
Thursday, April 29, 2021
3:00 PM Fundamental Physics from Gravitational Waves - John Ellis (King's College London)
Fundamental Physics from Gravitational Waves
- John Ellis (King's College London)
3:00 PM - 4:00 PM
Following the direct discovery of gravitational waves (GWs) by LIGO and Virgo, there are many opportunities to probe fundamental physics using GWs. These include using GWs from astrophysical sources to constrain the graviton mass and search for Lorentz violation, as well as searching for GWs from dark matter in merging neutron stars, from first-order phase transitions in the early Universe, and from loops of cosmic strings, as may be hinted by recent data from the NANOGrav pulsar timing array. The roles that could be played by atom interferometers measuring GWs in the mid-frequency band between LIGO/Virgo and LISA will be highlighted.
Friday, April 30, 2021
Saturday, May 1, 2021
Sunday, May 2, 2021

Monday, May 3, 2021
Tuesday, May 4, 2021
3:00 PM Black Holes, Unscripted - Niayesh Afshordi (Perimeter Institute)
Black Holes, Unscripted
- Niayesh Afshordi (Perimeter Institute)
3:00 PM - 4:00 PM
Black Holes occupy a special place in the fascination of astronomers and physicists. From the most speculative mathematical physicist to the most sensible radio astronomer, everyone has their own narrative of what lies within a black hole, based on their own preconceptions. This is in contrast to the more empirical and agnostic approach that we take in studying (almost) everything else in physics. As an alternative, I will outline what I consider to be a physical roadmap to unravelling what lies within black holes.
Wednesday, May 5, 2021
Thursday, May 6, 2021
Friday, May 7, 2021
Saturday, May 8, 2021
Sunday, May 9, 2021

Monday, May 17, 2021
Tuesday, May 18, 2021
3:00 PM Quantum collapse models and cosmic inflation - Jerome Martin (IAP)
Quantum collapse models and cosmic inflation
- Jerome Martin (IAP)
3:00 PM - 4:00 PM
Attempts to apply quantum collapse theories to Cosmology and cosmic inflation are reviewed. These attempts are motivated by the fact that the theory of cosmological perturbations of quantum-mechanical origin suffers from the single outcome problem, which is a modern incarnation of the quantum measurement problem, and that collapse models can provide a solution to these issues. Since inflationary predictions can be very accurately tested by cosmological data, this also leads to constraints on collapse models. These constraints are derived in the case of Continuous Spontaneous Localization (CSL) and are shown to be of unprecedented efficiency.
Wednesday, May 19, 2021
Thursday, May 20, 2021
Friday, May 21, 2021
Saturday, May 22, 2021
Sunday, May 23, 2021

Monday, May 24, 2021
Tuesday, May 25, 2021
2:00 PM Minimalism in modified gravity - Shinji Mukohyama (YITP)
Minimalism in modified gravity
- Shinji Mukohyama (YITP)
2:00 PM - 3:00 PM
It is generally believed that modification of general relativity inevitably introduces extra physical degree(s) of freedom. In this talk I argue that this is not the case by constructing modified gravity theories with two local physical degrees of freedom. After classifying such theories into two types, I show explicit examples and discuss their cosmology and phenomenology, such as possible amelioration of the H0 tension and stable massive gravity/bigravity cosmology.
Wednesday, May 26, 2021
Thursday, May 27, 2021
Friday, May 28, 2021
Saturday, May 29, 2021
Sunday, May 30, 2021

Monday, May 31, 2021
Tuesday, June 1, 2021
3:00 PM Probing high-scale new physics with modulated reheating - Zhong-Zhi Xianyu (Tsinghua University)
Probing high-scale new physics with modulated reheating
- Zhong-Zhi Xianyu (Tsinghua University)
3:00 PM - 4:00 PM
Scalar fields with spatially varying background could modulate the reheating process, thereby leaving their imprints in the density perturbations. In this talk we discuss two scenarios using this mechanism to probe physics at very high scales. First, we introduce a “cosmological Higgs collider” where the SM-Higgs-modulated reheating allows us to discover heavy particles and to measure their Higgs couplings in the squeezed primordial bispectrum. Second, we explain that the modulated reheating can act as a “cosmic microscope” that enlarges the small-scale preheating dynamics to CMB scales, providing us a chance to learn non-perturbative dynamics of the preheating.
Wednesday, June 2, 2021
Thursday, June 3, 2021
Friday, June 4, 2021
Saturday, June 5, 2021
Sunday, June 6, 2021

Monday, June 7, 2021
Tuesday, June 8, 2021
3:00 PM Indirect detection of gravitons through quantum entanglement - Sugumi Kanno (Kyushu University)
Indirect detection of gravitons through quantum entanglement
- Sugumi Kanno (Kyushu University)
3:00 PM - 4:00 PM
We propose an experiment that the entanglement between two macroscopic mirrors suspended at the end of an equal-arm interferometer is destroyed by the noise of gravitons through bremsstrahlung. By calculating the correlation function of the noise, we obtain the decoherence time from the decoherence functional. We estimate that the decoherence time induced by the noise of gravitons in squeezed states stemming from inflation is approximately 20 seconds for 40 km long arms and 40 kg mirrors. Our analysis shows that observation of the decoherence time of quantum entanglement has the potential to detect gravitons indirectly. This indirect detection of gravitons would give strong evidence of quantum gravity.
Wednesday, June 9, 2021
Thursday, June 10, 2021
Friday, June 11, 2021
Saturday, June 12, 2021
Sunday, June 13, 2021

Monday, June 14, 2021
Tuesday, June 15, 2021
3:00 PM A stringy perspective on the coincidence problem - Antonio Padilla (Nottingham University)
A stringy perspective on the coincidence problem
- Antonio Padilla (Nottingham University)
3:00 PM - 4:00 PM
The cosmological coincidence problem is the question of why now? Why do we live at the dawn of dark energy domination, when the energy density of dark matter and dark energy are roughly comparable? In this talk, I will describe how the problem is significantly alleviated, if not entirely solved, in generic string theory models of dark energy.
Wednesday, June 16, 2021
Thursday, June 17, 2021
3:00 PM [Colloquium] Black Hole Thermodynamics, Then and Now - Edward Witten (IAS)
[Colloquium] Black Hole Thermodynamics, Then and Now
- Edward Witten (IAS)
3:00 PM - 4:00 PM
Friday, June 18, 2021
Saturday, June 19, 2021
Sunday, June 20, 2021

Monday, June 21, 2021
Tuesday, June 22, 2021
3:00 PM Self-Organised Localisation - Tevong You (CERN)
Self-Organised Localisation
- Tevong You (CERN)
3:00 PM - 4:00 PM
We describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of a theory are functions of a scalar field subject to large fluctuations during inflation, quantum phase transitions can act as dynamical attractors. As a result, the theory parameters are probabilistically localised around the critical value and the Universe finds itself at the edge of a phase transition. We illustrate how self-organised localisation could account for the observed near-criticality of the Higgs self-coupling, the naturalness of the Higgs mass, or the smallness of the cosmological constant.
Wednesday, June 23, 2021
Thursday, June 24, 2021
Friday, June 25, 2021
Saturday, June 26, 2021
Sunday, June 27, 2021

Monday, July 5, 2021
Tuesday, July 6, 2021
3:00 PM A higher dimensional view on quantum cosmology - Thomas Van Riet
A higher dimensional view on quantum cosmology
- Thomas Van Riet
3:00 PM - 4:00 PM
Fundamental questions in cosmology, such as understanding the Big Bang, the cosmic hierarchy problem and boundary conditions for the wave function of the universe, should be possible to address explicitly in (toy?) models that are UV complete. Inspired from string theory I will discuss the role of extra dimensions in all these issues and show that indeed with some varying degree of precision the physics of extra dimensions provides answers. For instance; in a very natural suggestion by Banerjee et al to realise a de Sitter cosmology from string theory, I will explain how Vilenkin's tunneling wave function is selected as the unique boundary condition for the wave function of the universe.
Wednesday, July 7, 2021
Thursday, July 8, 2021
Friday, July 9, 2021
Saturday, July 10, 2021
Sunday, July 11, 2021

Monday, August 16, 2021
Tuesday, August 17, 2021
Wednesday, August 18, 2021
Thursday, August 19, 2021
Friday, August 20, 2021
Saturday, August 21, 2021
Sunday, August 22, 2021

Monday, August 23, 2021
Tuesday, August 24, 2021
Wednesday, August 25, 2021
Thursday, August 26, 2021
Friday, August 27, 2021
Saturday, August 28, 2021
Sunday, August 29, 2021

Monday, September 27, 2021
Tuesday, September 28, 2021
Wednesday, September 29, 2021
Thursday, September 30, 2021
Friday, October 1, 2021
3:00 PM Emergent Cosmology from the BFSS Matrix Model - Suddhasattwa Brahma (U. Edinburgh)
Emergent Cosmology from the BFSS Matrix Model
- Suddhasattwa Brahma (U. Edinburgh)
3:00 PM - 4:20 PM
The BFSS matrix model is a proposed non-perturbative definition of M-theory in which space is emergent. In this talk, I shall present a new paradigm of early-universe cosmology in the context of the BFSS theory. Specifically, I will show that matrix theory leads to an emergent non-singular cosmology which, at late times, can be described by an expanding phase of Standard Big Bang cosmology. Crucially, the thermal fluctuations in the emergent phase source an approximately scale-invariant spectrum of scalar perturbations and a scale-invariant spectrum of gravitational waves. Hence, this model leads to a successful scenario for the origin of perturbations responsible for the currently observed structure in the universe while providing a consistent UV-complete description.
Saturday, October 2, 2021
Sunday, October 3, 2021

Monday, October 4, 2021
Tuesday, October 5, 2021
Wednesday, October 6, 2021
Thursday, October 7, 2021
Friday, October 8, 2021
3:00 PM Gauge invariant formulation of the induced gravitational waves - Atsuhisa Ota (Hong Kong University of Science and Technology)
Gauge invariant formulation of the induced gravitational waves
- Atsuhisa Ota (Hong Kong University of Science and Technology)
3:00 PM - 4:40 PM
The gauge dependence of the second order induced gravitational waves are widely recognized issue since GWs should be physical observable. While there have been several studies about the gauge dependence, I will talk about a new idea to solve the issue. I revisited the definition of nonlinear tensor modes and their gauge transformation from a covariant perspective and find a way to properly define the gauge invariant energy density of the induced GWs.
Saturday, October 9, 2021
Sunday, October 10, 2021

Monday, October 11, 2021
Tuesday, October 12, 2021
3:00 PM Unlocking Dark Matter Physics out of Astrophysical Data Sets - Cora Dvorkin (Harvard University)
Unlocking Dark Matter Physics out of Astrophysical Data Sets
- Cora Dvorkin (Harvard University)
3:00 PM - 4:20 PM
Cosmological observations and galaxy dynamics seem to imply that 84% of all matter in the universe is composed of dark matter, which is not accounted for by the Standard Model of particles. The particle nature of dark matter is one of the most intriguing puzzles of our time. The wealth of knowledge which is and will soon be available from astrophysical surveys will reveal new information about our universe. I will discuss how we can use new and complementary data sets to improve our understanding of the particle nature of dark matter both at large and small scales.
Wednesday, October 13, 2021
Thursday, October 14, 2021
Friday, October 15, 2021
Saturday, October 16, 2021
Sunday, October 17, 2021

Monday, December 6, 2021
Tuesday, December 7, 2021
3:00 PM Testing the equivalence principle on cosmological scales - Camille Bonvin (Geneva U.)
Testing the equivalence principle on cosmological scales
- Camille Bonvin (Geneva U.)
3:00 PM - 4:20 PM
The weak equivalence principle is one of the cornerstones of general relativity. Its validity has been tested with impressive precision in the Solar System, with experiments involving baryonic matter and light. However, on cosmological scales and when dark matter is concerned, the validity of this principle is still unknown. In this talk I will show how relativistic effects in the large-scale structure can be used to test whether dark matter obeys the weak equivalence principle. I will present forecasts for this new test of gravity for future surveys like the SKA.
Wednesday, December 8, 2021
Thursday, December 9, 2021
Friday, December 10, 2021
Saturday, December 11, 2021
Sunday, December 12, 2021

Monday, December 13, 2021
Tuesday, December 14, 2021
Wednesday, December 15, 2021
Thursday, December 16, 2021
3:15 PM Testing inflation with small-scale anisotropies - Ema Dimastrogiovanni (Groningen U. and New South Wales U.)
Testing inflation with small-scale anisotropies
- Ema Dimastrogiovanni (Groningen U. and New South Wales U.)
3:15 PM - 4:35 PM
Inflation predicts a stochastic background of gravitational waves. In this talk I will discuss how anisotropies in the gravitational wave energy density can be a powerful tool in characterizing the inflationary gravitational wave background and potentially distinguishing it from backgrounds due to other sources.
Friday, December 17, 2021
Saturday, December 18, 2021
Sunday, December 19, 2021

Monday, December 20, 2021
Tuesday, December 21, 2021
Wednesday, December 22, 2021
Thursday, December 23, 2021
Friday, December 24, 2021
Saturday, December 25, 2021
Sunday, December 26, 2021

Monday, December 27, 2021
Tuesday, December 28, 2021
Wednesday, December 29, 2021
Thursday, December 30, 2021
Friday, December 31, 2021
Saturday, January 1, 2022
Sunday, January 2, 2022

Monday, January 3, 2022
Tuesday, January 4, 2022
Wednesday, January 5, 2022
Thursday, January 6, 2022
Friday, January 7, 2022
Saturday, January 8, 2022
Sunday, January 9, 2022

Monday, January 17, 2022
Tuesday, January 18, 2022
3:00 PM Testing the cosmological principle - Roya Mohayaee (Paris, Inst. Astrophys.)
Testing the cosmological principle
- Roya Mohayaee (Paris, Inst. Astrophys.)
3:00 PM - 4:20 PM
Our local Universe is anisotropic. On the contrary the CMB indicates that the early Universe was isotropic. A convergence between the two is expected in the standard model of cosmology. In this talk, I explore various observational probes to search for the cross-over between these two domains.
Wednesday, January 19, 2022
Thursday, January 20, 2022
Friday, January 21, 2022
Saturday, January 22, 2022
Sunday, January 23, 2022

Monday, January 31, 2022
Tuesday, February 1, 2022
Wednesday, February 2, 2022
3:00 PM Aspects of Light Scalar Dark Matter - Mark Hertzberg (Tufts University)
Aspects of Light Scalar Dark Matter
- Mark Hertzberg (Tufts University)
3:00 PM - 4:20 PM
I discuss various aspects of very light scalar dark matter, including axions. I begin by reviewing the properties of light scalar dark matter in superfluid condensates, and the relation to classical field theory. I review how such condensates are spatially localized clumps, which may be present in the galaxy. I then discuss the interesting possibility of parametric resonance of scalar axion clumps into electromagnetic waves, after mergers, which may leave an astrophysical signature. I also critically examine whether ultra-light scalars can resolve the core-cusp problem at the center of galaxies. I discuss the rate of decoherence of dark matter scalars that are in non-trivial quantum states. Finally, I examine the theoretical consistency of scalar dark matter models with non-standard interactions that address novel galactic features.
Thursday, February 3, 2022
Friday, February 4, 2022
Saturday, February 5, 2022
Sunday, February 6, 2022

Monday, February 14, 2022
Tuesday, February 15, 2022
3:00 PM Covariant formulation of non-equilibrium thermodynamics in General Relativity: Cosmic Acceleration from First Principles - Juan Garcia-Bellido
Covariant formulation of non-equilibrium thermodynamics in General Relativity: Cosmic Acceleration from First Principles
- Juan Garcia-Bellido
3:00 PM - 4:20 PM
Wednesday, February 16, 2022
Thursday, February 17, 2022
Friday, February 18, 2022
Saturday, February 19, 2022
Sunday, February 20, 2022

Monday, February 28, 2022
Tuesday, March 1, 2022
3:00 PM The Hubble tension and new physics at the eV scale: The path to New Early Dark Energy - Martin Sloth (CP3, University of Southern Denmark)
The Hubble tension and new physics at the eV scale: The path to New Early Dark Energy
- Martin Sloth (CP3, University of Southern Denmark)
3:00 PM - 4:20 PM
I will discuss the possibility that the Hubble tension is the signature of a fast triggered phase transition in the dark sector. Such a phase transition is called New Early Dark Energy (NEDE) and must have taken place just before recombination at the eV scale to resolve the tension fully. After discussing the cosmological NEDE phase transition, I will discuss the details of possible particle physics realizations.
Wednesday, March 2, 2022
Thursday, March 3, 2022
Friday, March 4, 2022
Saturday, March 5, 2022
Sunday, March 6, 2022

Monday, March 7, 2022
Tuesday, March 8, 2022
3:00 PM Probing the Early Universe with Gravitational Waves - Matteo Fasiello (Madrid, IFT & ICG, Portsmouth)
Probing the Early Universe with Gravitational Waves
- Matteo Fasiello (Madrid, IFT & ICG, Portsmouth)
3:00 PM - 4:20 PM
Wednesday, March 9, 2022
Thursday, March 10, 2022
Friday, March 11, 2022
Saturday, March 12, 2022
Sunday, March 13, 2022

Monday, April 11, 2022
Tuesday, April 12, 2022
3:00 PM Beyond the WIMP paradigm - Wei Xue (Florida U.)
Beyond the WIMP paradigm
- Wei Xue (Florida U.)
3:00 PM - 4:20 PM
Weakly-interacting massive particle (WIMP) has been the leading paradigm of dark matter for decades. Still, experimental searches for non-gravitational signatures of WIMPs have not found any positive evidence yet. It motivates us to think about new search strategies and novel dark matter models. My talk consists of the two directions looking beyond WIMP. First, I will introduce an effective field theory of superfluid helium. Developing the effective field theory is the first step of a project to build a dark matter direct detection detector using superfluid helium to search for sub-GeV mass dark matter. Then, in the other part of my talk, I will outline a new paradigm, where dark matter is made up of a novel form of matter, called “gapped continuum”, rather than an ordinary particle.
Wednesday, April 13, 2022
Thursday, April 14, 2022
Friday, April 15, 2022
Saturday, April 16, 2022
Sunday, April 17, 2022

Monday, April 25, 2022
Tuesday, April 26, 2022
3:00 PM Binary systems as gravitational wave detectors - Diego Blas (UAB-IFAE)
Binary systems as gravitational wave detectors
- Diego Blas (UAB-IFAE)
3:00 PM - 4:20 PM
The passage of gravitational waves (GWs) through a binary perturbs the trajectories of the two bodies, potentially causing observable changes to their orbital parameters. In the presence of a stochastic GW background (SGWB) these changes accumulate over time, causing the binary orbit to execute a random walk through parameter space. In this talk I will present a new formalism for calculating the full statistical evolution of a generic binary system in the presence of a SGWB, capturing all six of the binary's orbital parameters. I will show how this formalism can be applied to timing of binary pulsars and lunar laser ranging, thereby setting novel upper limits on the SGWB spectrum in a frequency band that is currently inaccessible to all other GW experiments.
Wednesday, April 27, 2022
Thursday, April 28, 2022
Friday, April 29, 2022
Saturday, April 30, 2022
Sunday, May 1, 2022

Monday, May 2, 2022
Tuesday, May 3, 2022
3:00 PM Cosmological tensions - Lavinia Heisenberg (Zurich, ETH and U. Heidelberg, ITP)
Cosmological tensions
- Lavinia Heisenberg (Zurich, ETH and U. Heidelberg, ITP)
3:00 PM - 4:20 PM
After introducing the standard model of cosmology and its parameters, I will discuss two important tensions between early and late-time measurements, namely the H0 tension and the sigma8 tension. Considering a small late-time deviation of the standard model, I will drive fully analytical conditions that any late-time dark energy model has to satisfy in order to solve both tensions simultaneously (see arxiv:2201.11623).
Wednesday, May 4, 2022
Thursday, May 5, 2022
Friday, May 6, 2022
Saturday, May 7, 2022
Sunday, May 8, 2022

Monday, May 30, 2022
Tuesday, May 31, 2022
4:00 PM Cosmological constant problem on the horizon - Hassan Firouzjahi (IPM, Tehran)
Cosmological constant problem on the horizon
- Hassan Firouzjahi (IPM, Tehran)
4:00 PM - 5:20 PM
We revisit the quantum cosmological constant problem and highlight the important roles played by the dS horizon of zero-point energy. We argue that fields which are light enough to have dS horizons of zero-point energy comparable to the FLRW Hubble radius are the main contributors to dark energy. On the other hand, the zero-point energy of heavy fields develop strong nonlinearities on sub-Hubble scales and can not contribute to dark energy. We speculate how this proposal can solve the old and new cosmological constant problems. We further speculate if the zero-point energy of heavy fields can provide the seeds of dark matter.
Wednesday, June 1, 2022
Thursday, June 2, 2022
Friday, June 3, 2022
Saturday, June 4, 2022
Sunday, June 5, 2022

Monday, June 27, 2022
Tuesday, June 28, 2022
3:00 PM Dark matter, black holes, and gravitational waves - Gianfranco Bertone (Amsterdam U.)
Dark matter, black holes, and gravitational waves
- Gianfranco Bertone (Amsterdam U.)
3:00 PM - 4:20 PM
The interplay between dark matter and black holes remains largely unexplored. Dark matter can in principle be *made of* black holes, as long as these are primordial, i.e. they are formed in the very early universe. Dark matter can also *accumulate around* black holes, and modify the rich phenomenology exhibited by these objects. After an overview of the status of dark matter searches, I will discuss the prospects for detecting primordial black holes or robustly ruling them out as dark matter candidates. I will then discuss the prospects for characterizing and identifying dark matter using gravitational waves, covering a wide range of dark matter candidate types and signals.
Wednesday, June 29, 2022
Thursday, June 30, 2022
Friday, July 1, 2022
Saturday, July 2, 2022
Sunday, July 3, 2022

Monday, July 11, 2022
Tuesday, July 12, 2022
Wednesday, July 13, 2022
Thursday, July 14, 2022
2:00 PM A Quantum-Mechanical Mechanism for Reducing the Cosmological Constant - Nemanja Kaloper (UC Davis)
A Quantum-Mechanical Mechanism for Reducing the Cosmological Constant
- Nemanja Kaloper (UC Davis)
2:00 PM - 3:20 PM
We exhibit a mechanism which dynamically adjusts cosmological constant toward 0+. The adjustment is quantum-mechanical, discharging cosmological constant in random discrete steps. It renders de Sitter space unstable, and triggers its decay toward Minkowski. Since the instability dynamically stops at vanishing cosmological constant, the evolution favors the terminal Minkowski space without a need for anthropics. The mechanism works for any QFT coupled to gravity.
Friday, July 15, 2022
Saturday, July 16, 2022
Sunday, July 17, 2022

Monday, July 18, 2022
Tuesday, July 19, 2022
3:00 PM Towards a Dark Sector Model from String Theory - Heliudson Bernardo (McGill U.)
Towards a Dark Sector Model from String Theory
- Heliudson Bernardo (McGill U.)
3:00 PM - 4:20 PM
I will describe a proposal for a unified dark sector model in heterotic string theory with the following features: The model-independent axion descending from the Kalb-Ramond 2-form field is identified with the dark-matter field, and the real part of a Kahler modulus field associated with the radius of one of the extra spatial dimension accounts for dark energy. The expectation value of the dilaton field is stabilized by a gaugino condensation mechanism. A dark-energy potential corresponding to a realistic low-energy scale results from some gentle tuning of the stabilized expectation value of the dilaton.
Wednesday, July 20, 2022
Thursday, July 21, 2022
Friday, July 22, 2022
Saturday, July 23, 2022
Sunday, July 24, 2022

Monday, August 1, 2022
Tuesday, August 2, 2022
Wednesday, August 3, 2022
Thursday, August 4, 2022
Friday, August 5, 2022
Saturday, August 6, 2022
Sunday, August 7, 2022

Monday, August 8, 2022
Tuesday, August 9, 2022
Wednesday, August 10, 2022
Thursday, August 11, 2022
Friday, August 12, 2022
Saturday, August 13, 2022
Sunday, August 14, 2022

Monday, August 15, 2022
Tuesday, August 16, 2022
Wednesday, August 17, 2022
Thursday, August 18, 2022
Friday, August 19, 2022
Saturday, August 20, 2022
Sunday, August 21, 2022

Monday, August 22, 2022
Tuesday, August 23, 2022
Wednesday, August 24, 2022
Thursday, August 25, 2022
Friday, August 26, 2022
Saturday, August 27, 2022
Sunday, August 28, 2022

Monday, August 29, 2022
Tuesday, August 30, 2022
Wednesday, August 31, 2022
Thursday, September 1, 2022
Friday, September 2, 2022
Saturday, September 3, 2022
Sunday, September 4, 2022

Monday, September 5, 2022
Tuesday, September 6, 2022
Wednesday, September 7, 2022
Thursday, September 8, 2022
Friday, September 9, 2022
Saturday, September 10, 2022
Sunday, September 11, 2022

Monday, September 12, 2022
Tuesday, September 13, 2022
Wednesday, September 14, 2022
Thursday, September 15, 2022
3:00 PM [colloquium] Testing the No-Hair Theorem and the Area Theorem with LIGO - Saul Teukolsky
[colloquium] Testing the No-Hair Theorem and the Area Theorem with LIGO
- Saul Teukolsky
3:00 PM - 4:20 PM
One of the key results of general relativity is that an astrophysical black hole in equilibrium is uniquely described by just two parameters, its mass and spin. This is called the No-Hair Theorem, a result that is not true in alternative theories of gravity. For many years, people have speculated about testing the theorem using gravitational waves from merging black holes. However, the consensus has been that this test will require the sensitivity of next-generation detectors. I will show that this consensus is wrong for a surprising reason, and report a test with data from GW150914, the first LIGO gravitational wave detection. An extension of the test confirms Hawking's Area Theorem at the 97% limit.
Friday, September 16, 2022
Saturday, September 17, 2022
Sunday, September 18, 2022

Monday, September 19, 2022
Tuesday, September 20, 2022
3:00 PM How much entanglement is carried out by Hawking radiation? - Ivan Agullo (Louisiana State University)
How much entanglement is carried out by Hawking radiation?
- Ivan Agullo (Louisiana State University)
3:00 PM - 4:20 PM
That event horizons generate quantum correlations via the Hawking effect is well known. In this talk, I will argue that the creation of entanglement in Hawking's process very much depends on the environment surrounding the horizon. In fact, I'll show that such entanglement can be modulated as desired, by appropriately illuminating the horizon. I will further apply these ideas to analog event horizons concocted in the laboratory and insist that the ability to tune the generation of entanglement offers a promising route towards detecting quantum signatures of the elusive Hawking effect.
Wednesday, September 21, 2022
Thursday, September 22, 2022
Friday, September 23, 2022
Saturday, September 24, 2022
Sunday, September 25, 2022

Monday, September 26, 2022
Tuesday, September 27, 2022
2:00 PM Non-Gaussianities from primordial quantum diffusion - Vincent Vennin (LPENS, Paris & APC, Paris)
Non-Gaussianities from primordial quantum diffusion
- Vincent Vennin (LPENS, Paris & APC, Paris)
2:00 PM - 3:20 PM
I will show that primordial quantum diffusion unavoidably generates non-Gaussian, exponential tails in the distribution of inflationary perturbations. This type of non-Gaussianity cannot be captured by the usual perturbative parametrisations, and it leaves specific imprints on the statistics of cosmic structures that I will discuss.
Wednesday, September 28, 2022
Thursday, September 29, 2022
Friday, September 30, 2022
Saturday, October 1, 2022
Sunday, October 2, 2022

Monday, October 3, 2022
Tuesday, October 4, 2022
3:00 PM Modified Gravity and Observational Constraints - Anne-Christine Davis (DAMTP, University of Cambridge)
Modified Gravity and Observational Constraints
- Anne-Christine Davis (DAMTP, University of Cambridge)
3:00 PM - 4:20 PM
There has been a lot of interest in theories that modified Einstein gravity but which reduce to general relativity in certain limits. Such modified gravity theories predict the existence of a fifth force. There are severe constraints on fifth forces from solar system observations. However there has been a recent resurgence of interest in modified gravity theories with the advent of sophisticated screening mechanism whereby the fifth force is suppressed in the solar system but not necessarily beyond. I will review some models of modified gravity and display the screening mechanism. I will then discuss how such models can be tested and constrained using laboratory experiments.
Wednesday, October 5, 2022
Thursday, October 6, 2022
Friday, October 7, 2022
Saturday, October 8, 2022
Sunday, October 9, 2022

Monday, December 12, 2022
Tuesday, December 13, 2022
Wednesday, December 14, 2022
Thursday, December 15, 2022
Friday, December 16, 2022
Saturday, December 17, 2022
Sunday, December 18, 2022

Monday, December 19, 2022
Tuesday, December 20, 2022
Wednesday, December 21, 2022
Thursday, December 22, 2022
Friday, December 23, 2022
Saturday, December 24, 2022
Sunday, December 25, 2022

Monday, December 26, 2022
Tuesday, December 27, 2022
Wednesday, December 28, 2022
Thursday, December 29, 2022
Friday, December 30, 2022
Saturday, December 31, 2022
Sunday, January 1, 2023

Monday, January 2, 2023
Tuesday, January 3, 2023
Wednesday, January 4, 2023
Thursday, January 5, 2023
Friday, January 6, 2023
Saturday, January 7, 2023
Sunday, January 8, 2023

Monday, January 9, 2023
Tuesday, January 10, 2023
Wednesday, January 11, 2023
Thursday, January 12, 2023
Friday, January 13, 2023
Saturday, January 14, 2023
Sunday, January 15, 2023

Monday, February 6, 2023
Tuesday, February 7, 2023
3:00 PM Wave-optics limit of the stochastic gravitational-wave background - Alice Garoffolo (Leiden University)
Wave-optics limit of the stochastic gravitational-wave background
- Alice Garoffolo (Leiden University)
3:00 PM - 4:20 PM
The stochastic gravitational waves background is a rich resource of cosmological information, encoded both in its source statistics and its anisotropies induced by propagation effects. During their journey, the gravitational waves constituting the stochastic background encounter cosmic structures, which are able to modify the observed signal. According to the ratio between the wavelength of the wave, and the matter overdensities typical length-scale, interference and diffraction effects may arise, possibly boosting the signal’s amplitude or inducing a non-trivial polarization pattern. In this talk I will present my results about the wave-optics limit of the stochastic gravitational wave background, and describe how we can use them to gain information about the matter content of the Universe.
Wednesday, February 8, 2023
Thursday, February 9, 2023
Friday, February 10, 2023
Saturday, February 11, 2023
Sunday, February 12, 2023

Monday, February 20, 2023
Tuesday, February 21, 2023
3:00 PM UV Physics and Hawking radiation - Pei-Ming Ho (National Taiwan University)
UV Physics and Hawking radiation
- Pei-Ming Ho (National Taiwan University)
3:00 PM - 4:20 PM
Although Hawking radiation was derived from an effective-theory calculation, many believe that it is robust, and insensitive to UV physics. We analyze Hawking radiation in more detail, paying attention to its time dependence, and find that it is in fact sensitive to UV physical effects. We conclude that the effective-theory prediction is not reliable. We will also comment on the applications of this analysis to other related problems.
Wednesday, February 22, 2023
Thursday, February 23, 2023
Friday, February 24, 2023
Saturday, February 25, 2023
Sunday, February 26, 2023

Monday, February 27, 2023
Tuesday, February 28, 2023
Wednesday, March 1, 2023
Thursday, March 2, 2023
Friday, March 3, 2023
3:00 PM Fuzzy Fields for Cosmic Conundrums - Daniel Grin (Haverford college)
Fuzzy Fields for Cosmic Conundrums
- Daniel Grin (Haverford college)
3:00 PM - 4:20 PM
High-energy particle theory motivates that a very light (m<<10^{-12} eV) field may exist, in addition to the usual standard model spectrum. If so, such a field could contribute to the dark matter and dark energy of the universe at a broad range of epochs. In this talk, I will explore the impact of such a field as a dark matter component (though its impact on CMB anisotropies), as a contributor to late-time acceleration or early dark energy components, and as a field driving evolution in the fundamental constants of nature. I will connect theory to observations, and perhaps preview the promise of future CMB and other cosmological experiments.
Saturday, March 4, 2023
Sunday, March 5, 2023

Monday, March 6, 2023
Tuesday, March 7, 2023
3:00 PM Primordial non-Gaussianity beyond the bispectrum - Gonzalo Palma (Universidad de Chile)
Primordial non-Gaussianity beyond the bispectrum
- Gonzalo Palma (Universidad de Chile)
3:00 PM - 4:20 PM
I will review recent progress to address the generation of primordial non-Gaussianity during cosmic inflation. I will focus my attention on the origin of non-Gaussian signals that are poorly parametrized by the bispectrum (the three-point function). I will show that there are various types of non-Gaussianities that can arise during inflation that, to be understood, require taking into account a large set of n-point functions both, via perturbative or non-perturbative techniques. Such classes of non-Gaussianity may be crucial to understand the generation of primordial black holes.
Wednesday, March 8, 2023
Thursday, March 9, 2023
Friday, March 10, 2023
Saturday, March 11, 2023
Sunday, March 12, 2023

Monday, March 13, 2023
Tuesday, March 14, 2023
3:00 PM Is H0 a constant in Lambda-CDM cosmology? - Eoin Ó Colgáin (Atlantic Technological University)
Is H0 a constant in Lambda-CDM cosmology?
- Eoin Ó Colgáin (Atlantic Technological University)
3:00 PM - 4:20 PM
There are persistent tensions in flat LCDM cosmology, most notably H0 and S8 tension. Modifications of the flat LCDM model designed to alleviate one tension typically exacerbate the other. Returning to basics, I will argue why evolution of cosmological parameters with effective redshift is expected in LCDM cosmology. I will review observations supporting this claim.
Wednesday, March 15, 2023
Thursday, March 16, 2023
Friday, March 17, 2023
Saturday, March 18, 2023
Sunday, March 19, 2023

Monday, April 10, 2023
Tuesday, April 11, 2023
3:00 PM More General Relativity - David Kaplan (Johns Hopkins U.)
More General Relativity
- David Kaplan (Johns Hopkins U.)
3:00 PM - 4:20 PM
I will show that the quantum field theory that reproduces classical general relativity, has a slight but nontrivial generalization. The Hilbert space allows for states that violate some of Einstein‘s equations without creating additional degrees of freedom. This amounts to a “classical background“ which is non-dynamical, but effectively redshifts like dark matter. I will go over a toy example, as well as the electromagnetic analog, which includes the violations of Gauss’s law. Then I will produce the modified GR equations with a source term. Finally, I will discuss some preliminary thoughts of the provocative phenomenology.
Wednesday, April 12, 2023
Thursday, April 13, 2023
Friday, April 14, 2023
Saturday, April 15, 2023
Sunday, April 16, 2023

Monday, May 1, 2023
Tuesday, May 2, 2023
Wednesday, May 3, 2023
Thursday, May 4, 2023
Friday, May 5, 2023
Saturday, May 6, 2023
Sunday, May 7, 2023

Monday, June 19, 2023
Tuesday, June 20, 2023
3:00 PM New horizons in black hole physics - Vitor Cardoso (Niels Bohr Institute and Lisbon, IST)
New horizons in black hole physics
- Vitor Cardoso (Niels Bohr Institute and Lisbon, IST)
3:00 PM - 4:20 PM
One of consequences of General Relativity is that vacuum black holes are remarkably simple macroscopic objects. They are thus ideal laboratories to test the underlying theory and to search for new degrees of freedom. I will discuss recent progress in black hole spectroscopy and in our understanding of black hole environments using gravitational-wave observations.
Wednesday, June 21, 2023
Thursday, June 22, 2023
Friday, June 23, 2023
Saturday, June 24, 2023
Sunday, June 25, 2023

Monday, July 3, 2023
Tuesday, July 4, 2023
10:00 AM Can we detect gravitons or HFGWs? - Jiro Soda (Kobe University & KEK)
Can we detect gravitons or HFGWs?
- Jiro Soda (Kobe University & KEK)
10:00 AM - 11:20 AM
Detecting gravitons is a big challenge. In this talk, we discuss possible experiments for the graviton detection. We consider macroscopic quantum phenomena and its relation to gravity. First of all, we will discuss quantum noise of gravitons in a detector. Then, we will explain how the decoherence due to noise of gravitons can be used for the graviton search. We also argue that high frequency gravitational wave detection is also related to the graviton search. Then, we propose a magnon detector for probing HFGWs.
Wednesday, July 5, 2023
Thursday, July 6, 2023
Friday, July 7, 2023
Saturday, July 8, 2023
Sunday, July 9, 2023

Monday, July 17, 2023
Tuesday, July 18, 2023
3:00 PM Does inflation always start with a Bang? - Jerome Quintin (U. Waterloo & Perimeter Inst. Theor. Phys.)
Does inflation always start with a Bang?
- Jerome Quintin (U. Waterloo & Perimeter Inst. Theor. Phys.)
3:00 PM - 4:20 PM
Inflationary spacetimes have been argued to be past geodesically incomplete in many situations. However, whether the geodesic incompleteness implies the existence of an initial spacetime curvature singularity or whether the spacetime may be extended (potentially into another phase of the universe) is generally unknown. Both questions have important physical implications. In this talk, we will take a closer look at the geometrical structure of inflationary spacetimes and investigate these very questions.
Wednesday, July 19, 2023
Thursday, July 20, 2023
Friday, July 21, 2023
Saturday, July 22, 2023
Sunday, July 23, 2023

Monday, July 24, 2023
Tuesday, July 25, 2023
3:00 PM Dissipative Inflation via Scalar Production - Borna Salehian
Dissipative Inflation via Scalar Production
- Borna Salehian
3:00 PM - 4:20 PM
We describe a new mechanism that gives rise to dissipation during cosmic inflation. In the simplest implementation, the mechanism requires the presence of a massive scalar field with a softly-broken global U(1) symmetry, along with the inflaton field. Particle production in this scenario takes place on parametrically sub-horizon scales. Consequently, the backreaction of the produced particles on the inflationary dynamics can be treated in a local manner, allowing us to compute their effects analytically. We determine the parametric dependence of the power spectrum which deviates from the usual slow-roll expression. Non-Gaussianities are always sizeable whenever perturbations are generated by the noise induced by dissipation.
Wednesday, July 26, 2023
Thursday, July 27, 2023
Friday, July 28, 2023
Saturday, July 29, 2023
Sunday, July 30, 2023

Monday, August 7, 2023
Tuesday, August 8, 2023
Wednesday, August 9, 2023
Thursday, August 10, 2023
Friday, August 11, 2023
Saturday, August 12, 2023
Sunday, August 13, 2023

Monday, August 14, 2023
Tuesday, August 15, 2023
Wednesday, August 16, 2023
Thursday, August 17, 2023
Friday, August 18, 2023
Saturday, August 19, 2023
Sunday, August 20, 2023

Monday, August 21, 2023
Tuesday, August 22, 2023
Wednesday, August 23, 2023
Thursday, August 24, 2023
Friday, August 25, 2023
Saturday, August 26, 2023
Sunday, August 27, 2023

Monday, August 28, 2023
Tuesday, August 29, 2023
Wednesday, August 30, 2023
Thursday, August 31, 2023
Friday, September 1, 2023
Saturday, September 2, 2023
Sunday, September 3, 2023

Monday, September 4, 2023
Tuesday, September 5, 2023
Wednesday, September 6, 2023
Thursday, September 7, 2023
Friday, September 8, 2023
Saturday, September 9, 2023
Sunday, September 10, 2023

Monday, September 11, 2023
Tuesday, September 12, 2023
Wednesday, September 13, 2023
Thursday, September 14, 2023
Friday, September 15, 2023
Saturday, September 16, 2023
Sunday, September 17, 2023

Monday, September 18, 2023
Tuesday, September 19, 2023
Wednesday, September 20, 2023
Thursday, September 21, 2023
Friday, September 22, 2023
Saturday, September 23, 2023
Sunday, September 24, 2023

Monday, September 25, 2023
Tuesday, September 26, 2023
3:00 PM Phantom fluid cosmology: constraints and direct detection - James Cline (McGill University)
Phantom fluid cosmology: constraints and direct detection
- James Cline (McGill University)
3:00 PM - 4:20 PM
Phantom fields have been widely invoked as a source of dark energy in cosmology, but rarely taken seriously as quantum theories. The vacuum is automatically unstable to production of negative-energy ghost particles plus normal particles, requiring such theories to be effective only, below some UV cutoff. I will present recent cosmological constraints arising from the vacuum instability, both at the level of the homogeneous background, and the density perturbations. We find that the fluid of particles produced from vacuum decay can ameliorate but not solve the notorious Hubble tension problem, and cannot fully replace the cosmological constant as a source of dark energy. The vacuum decay can be a source of boosted dark radiation, which might be detectable if it interacts with ordinary matter. I will show that this could fit recent excess events reported by the DAMIC experiment at SNOLAB.
Wednesday, September 27, 2023
Thursday, September 28, 2023
Friday, September 29, 2023
Saturday, September 30, 2023
Sunday, October 1, 2023

Monday, October 16, 2023
Tuesday, October 17, 2023
Wednesday, October 18, 2023
Thursday, October 19, 2023
Friday, October 20, 2023
Saturday, October 21, 2023
Sunday, October 22, 2023

Monday, November 20, 2023
Tuesday, November 21, 2023
3:00 PM An effective coda for loops in single clock inflation - Subodh Patil (Leiden University)
An effective coda for loops in single clock inflation
- Subodh Patil (Leiden University)
3:00 PM - 4:20 PM
In this talk, I will discuss an upcoming paper that shows how knowledge of the ultra-violet asymptotics of the effective action can offer a shortcut for the computation of certain processes in the effective theory of single clock inflation that involve loops of particles of arbitrary spin, in particular, with respect to the logarithmic running of correlation functions. In doing so, this work offers a coda to the question of the nature of the logarithmic running of inflationary correlators, confirming and generalizing the results of previous explicit in-in computations. Some implications for various applications of topical interest will be discussed.
Wednesday, November 22, 2023
Thursday, November 23, 2023
Friday, November 24, 2023
Saturday, November 25, 2023
Sunday, November 26, 2023

Monday, November 27, 2023
Tuesday, November 28, 2023
Wednesday, November 29, 2023
Thursday, November 30, 2023
Friday, December 1, 2023
Saturday, December 2, 2023
Sunday, December 3, 2023

Monday, December 4, 2023
Tuesday, December 5, 2023
4:00 PM Graviton detection and the quantization of gravity - Nicholas Rodd (CERN)
Graviton detection and the quantization of gravity
- Nicholas Rodd (CERN)
4:00 PM - 5:20 PM
We revisit a question asked by Dyson: "Is a graviton detectable?" We demonstrate that in both Dyson's original sense and in a more modern measurement-theoretic sense, it is possible to construct a detector sensitive to single gravitons, and in fact a variety of existing and near-term gravitational wave detectors can achieve this. However, while such a signal would be consistent with the quantization of the gravitational field, we draw on results from quantum optics to show how the same signal could just as well be explained via classical gravitational waves. We outline the kind of measurements that would be needed to demonstrate quantization of gravitational radiation and explain why these are substantially more difficult than simply counting graviton clicks or observing gravitational noise in an interferometer, and likely impossible to perform in practice.
Wednesday, December 6, 2023
Thursday, December 7, 2023
Friday, December 8, 2023
Saturday, December 9, 2023
Sunday, December 10, 2023

Monday, December 11, 2023
Tuesday, December 12, 2023
3:00 PM Primordial Black Holes Are True Vacuum Nurseries - Louis Hamaide (UCL, London)
Primordial Black Holes Are True Vacuum Nurseries
- Louis Hamaide (UCL, London)
3:00 PM - 4:20 PM
The Hawking evaporation of primordial black holes (PBH) reheats the Universe locally, forming hot spots that survive throughout their lifetime. We propose to use the temperature profile of such hot spots for light PBHs to calculate the decay rate of metastable vacua in cosmology, avoiding inconsistencies inherent to the Hartle-Hawking or Unruh vacuum and thermal loop correction which suppress the decay rate. We apply our formalism to the case of the purported electroweak (Higgs) vacuum stability and find that a PBH energy fraction $\beta > 7\times 10^{-80} (M/g)^{3/2}$ is ruled out for black holes with masses $0.8 g < M < 10^{15} g$.
Wednesday, December 13, 2023
Thursday, December 14, 2023
Friday, December 15, 2023
Saturday, December 16, 2023
Sunday, December 17, 2023

Monday, December 18, 2023
Tuesday, December 19, 2023
Wednesday, December 20, 2023
Thursday, December 21, 2023
Friday, December 22, 2023
Saturday, December 23, 2023
Sunday, December 24, 2023

Monday, December 25, 2023
Tuesday, December 26, 2023
Wednesday, December 27, 2023
Thursday, December 28, 2023
Friday, December 29, 2023
Saturday, December 30, 2023
Sunday, December 31, 2023

Monday, January 1, 2024
Tuesday, January 2, 2024
Wednesday, January 3, 2024
Thursday, January 4, 2024
Friday, January 5, 2024
Saturday, January 6, 2024
Sunday, January 7, 2024

Monday, January 8, 2024
Tuesday, January 9, 2024
Wednesday, January 10, 2024
Thursday, January 11, 2024
Friday, January 12, 2024
Saturday, January 13, 2024
Sunday, January 14, 2024

Monday, January 22, 2024
Tuesday, January 23, 2024
3:00 PM Instability and gravitational waves in axion inflation with strong backreaction from gauge modes - Lorenzo Sorbo (University of Massachusetts)
Instability and gravitational waves in axion inflation with strong backreaction from gauge modes
- Lorenzo Sorbo (University of Massachusetts)
3:00 PM - 4:00 PM
I will talk about a model in which an inflaton, through an axionic coupling to a U(1) gauge field, causes an amplification of the gauge field modes that strongly backreact on its dynamics. In particular, I will discuss, using analytical formulae, an instability of the system that emerges when one considers the evolution of the gauge field modes coupled to the inflaton zero mode, treating perturbatively the deviation of the inflaton velocity from its mean-field value. This analysis confirms previous numerical results. I will also discuss two different numerical studies of the system in the same regime, showing how this behavior can generate peculiar observable features in the spectrum of gravitational waves produced by the modes of the gauge field.
Wednesday, January 24, 2024
Thursday, January 25, 2024
Friday, January 26, 2024
Saturday, January 27, 2024
Sunday, January 28, 2024

Monday, February 5, 2024
Tuesday, February 6, 2024
Wednesday, February 7, 2024
Thursday, February 8, 2024
Friday, February 9, 2024
Saturday, February 10, 2024
Sunday, February 11, 2024

Monday, February 19, 2024
Tuesday, February 20, 2024
3:00 PM Lingering Before Inflation - Scott Watson (Syracuse University)
Lingering Before Inflation
- Scott Watson (Syracuse University)
3:00 PM - 4:00 PM
In this talk, we revisit motivation from String Theory for new phases of cosmology – prior to inflation. Cosmic inflation offers a causal way to predict initial conditions for the growth of structure and density fluctuations in the cosmic microwave background and large-scale structure formation. However, asymptotic de Sitter space possesses a past cosmological (physical) singularity implying the theory cannot be complete. In this talk, I will discuss how investigations into QCD led to an idea that could prevent the past singularity, or at least give a way to calculate predictions in real time on curved space-time backgrounds. This paradigm would lead to cosmologies that do not begin (Big Bang) or repeat (Ekpyrotic / Cyclic scenario) but instead begin from sitting around – a period of “lingering”, as first considered by Lemaître.
Wednesday, February 21, 2024
Thursday, February 22, 2024
Friday, February 23, 2024
Saturday, February 24, 2024
Sunday, February 25, 2024

Monday, April 1, 2024
Tuesday, April 2, 2024
Wednesday, April 3, 2024
Thursday, April 4, 2024
Friday, April 5, 2024
Saturday, April 6, 2024
Sunday, April 7, 2024

Monday, April 15, 2024
Tuesday, April 16, 2024
Wednesday, April 17, 2024
Thursday, April 18, 2024
Friday, April 19, 2024
Saturday, April 20, 2024
Sunday, April 21, 2024

Monday, April 22, 2024
Tuesday, April 23, 2024
3:00 PM Back-reaction in the early universe - Laura Iacconi (Queen Mary University of London & University of Portsmouth)
Back-reaction in the early universe
- Laura Iacconi (Queen Mary University of London & University of Portsmouth)
3:00 PM - 4:00 PM
Both single- and multi-field models of inflation might lead to enhanced scalar fluctuations on scales much smaller than those seeding the large-scale structure formation. In these scenarios, it is possible that the spike of power at high wavenumber might induce large corrections to the scalar power spectrum, e.g. in the form of loop corrections, potentially endangering the perturbativity of the underlying models. In this talk we discuss recent developments in the calculation of the 1-loop correction.
Wednesday, April 24, 2024
Thursday, April 25, 2024
Friday, April 26, 2024
Saturday, April 27, 2024
Sunday, April 28, 2024

Monday, May 27, 2024
Tuesday, May 28, 2024
3:00 PM Multi-messenger probes of parity symmetry - Macarena Lagos (Andres Bello Natl. U.)
Multi-messenger probes of parity symmetry
- Macarena Lagos (Andres Bello Natl. U.)
3:00 PM - 4:00 PM
Gravitational waves (GWs) are an ideal observable to probe the properties of gravity, from the strong to the weak-field regimes. In particular, by studying their cosmological propagation, we can test the fundamenal properties of gravity on large scales, such as parity symmetry. In this talk, I will discuss the signatures that parity violation would leave on gravitational waves from coalescing binaries, showing how the GW polarization can change from emission to detection. I will then argue that the observation of GWs from binary neutron stars and their EM counterparts provide a unique opportunity to probe polarization changes, and hence constrain parity violation in the future.
Wednesday, May 29, 2024
Thursday, May 30, 2024
Friday, May 31, 2024
Saturday, June 1, 2024
Sunday, June 2, 2024

Monday, June 3, 2024
Tuesday, June 4, 2024
10:00 AM Induced gravitational waves from inflaton oscillons and solitons - Kaloian Lozanov (Kavli IPMU, Tokyo University)
Induced gravitational waves from inflaton oscillons and solitons
- Kaloian Lozanov (Kavli IPMU, Tokyo University)
10:00 AM - 11:00 AM
We present a new way to study cosmic inflation with gravitational waves (GWs). The gravitational signal is generated thanks to nonlinear structures in the inflaton field, called oscillons. This novel probe allows us to test models of inflation which are challenging to constrain with CMB experiments. We also present a novel induced-GW signature, called Universal GWs, associated with all early-Universe scenarios involving the formation of non-inflaton solitons. Universal GWs provide a new avenue for testing the physics of primordial solitons, such as their formation and interactions, and also an explanation of the Pulsar Timing Array data.
Wednesday, June 5, 2024
Thursday, June 6, 2024
Friday, June 7, 2024
Saturday, June 8, 2024
Sunday, June 9, 2024

Monday, June 10, 2024
Tuesday, June 11, 2024
10:00 AM Cosmic birefringence and its implications - Ippei Obata (Kavli IPMU, Tokyo University)
Cosmic birefringence and its implications
- Ippei Obata (Kavli IPMU, Tokyo University)
10:00 AM - 11:00 AM
Cosmic birefringence is a parity-violating phenomenon that rotates the plane of linear polarization of the CMB photons. Recently, a nonzero isotropic cosmic birefringence (ICB), its overall rotation angle from the last scattering surface to the present, with a statistical significance of 3.6 sigma has been reported for the latest joint analysis of Planck/WMAP data. In this talk, we will present some theoretical implications of ICB for new physics beyond the Standard Model, such as axions. Or, we will show why new physics is necessary to explain the measured ICB angle.
Wednesday, June 12, 2024
Thursday, June 13, 2024
Friday, June 14, 2024
Saturday, June 15, 2024
Sunday, June 16, 2024

Monday, June 24, 2024
Tuesday, June 25, 2024
3:00 PM Gravitational Wave-Induced Freeze-In of Fermionic Dark Matter - Azadeh Maleknejad (King’s College London)
Gravitational Wave-Induced Freeze-In of Fermionic Dark Matter
- Azadeh Maleknejad (King’s College London)
3:00 PM - 4:20 PM
The minimal coupling of massless fermions to gravity does not allow for their gravitational production solely based on the expansion of the Universe. In this talk I will explain that changes in the presence of realistic and potentially detectable stochastic gravitational wave backgrounds. Next, I will discuss the resulting energy density of Weyl fermions at 1-loop. If the initially massless fermions eventually acquire mass, this mechanism can explain the dark matter abundance in the Universe. Remarkably, it may be more efficient than conventional gravitational production of superheavy fermions.
Wednesday, June 26, 2024
Thursday, June 27, 2024
Friday, June 28, 2024
Saturday, June 29, 2024
Sunday, June 30, 2024

Monday, July 1, 2024
Tuesday, July 2, 2024
Wednesday, July 3, 2024
Thursday, July 4, 2024
Friday, July 5, 2024
Saturday, July 6, 2024
Sunday, July 7, 2024

Monday, July 22, 2024
Tuesday, July 23, 2024
Wednesday, July 24, 2024
Thursday, July 25, 2024
Friday, July 26, 2024
Saturday, July 27, 2024
Sunday, July 28, 2024

Monday, July 29, 2024
Tuesday, July 30, 2024
Wednesday, July 31, 2024
Thursday, August 1, 2024
Friday, August 2, 2024
Saturday, August 3, 2024
Sunday, August 4, 2024

Monday, August 5, 2024
Tuesday, August 6, 2024
Wednesday, August 7, 2024
Thursday, August 8, 2024
Friday, August 9, 2024
Saturday, August 10, 2024
Sunday, August 11, 2024

Monday, August 12, 2024
Tuesday, August 13, 2024
Wednesday, August 14, 2024
Thursday, August 15, 2024
Friday, August 16, 2024
Saturday, August 17, 2024
Sunday, August 18, 2024

Monday, August 19, 2024
Tuesday, August 20, 2024
Wednesday, August 21, 2024
Thursday, August 22, 2024
Friday, August 23, 2024
Saturday, August 24, 2024
Sunday, August 25, 2024

Monday, August 26, 2024
Tuesday, August 27, 2024
Wednesday, August 28, 2024
Thursday, August 29, 2024
Friday, August 30, 2024
Saturday, August 31, 2024
Sunday, September 1, 2024

Monday, September 2, 2024
Tuesday, September 3, 2024
Wednesday, September 4, 2024
Thursday, September 5, 2024
Friday, September 6, 2024
Saturday, September 7, 2024
Sunday, September 8, 2024

Monday, September 9, 2024
Tuesday, September 10, 2024
Wednesday, September 11, 2024
Thursday, September 12, 2024
Friday, September 13, 2024
Saturday, September 14, 2024
Sunday, September 15, 2024

Monday, September 16, 2024
Tuesday, September 17, 2024
Wednesday, September 18, 2024
Thursday, September 19, 2024
Friday, September 20, 2024
Saturday, September 21, 2024
Sunday, September 22, 2024

Monday, September 23, 2024
Tuesday, September 24, 2024
Wednesday, September 25, 2024
Thursday, September 26, 2024
Friday, September 27, 2024
Saturday, September 28, 2024
Sunday, September 29, 2024

Monday, September 30, 2024
Tuesday, October 1, 2024
Wednesday, October 2, 2024
Thursday, October 3, 2024
Friday, October 4, 2024
Saturday, October 5, 2024
Sunday, October 6, 2024

Monday, October 7, 2024
Tuesday, October 8, 2024
Wednesday, October 9, 2024
Thursday, October 10, 2024
Friday, October 11, 2024
Saturday, October 12, 2024
Sunday, October 13, 2024

Monday, October 14, 2024
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Wednesday, October 16, 2024
Thursday, October 17, 2024
Friday, October 18, 2024
Saturday, October 19, 2024
Sunday, October 20, 2024

Monday, October 21, 2024
Tuesday, October 22, 2024
Wednesday, October 23, 2024
Thursday, October 24, 2024
Friday, October 25, 2024
Saturday, October 26, 2024
Sunday, October 27, 2024

Monday, October 28, 2024
Tuesday, October 29, 2024
Wednesday, October 30, 2024
Thursday, October 31, 2024
Friday, November 1, 2024
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Monday, November 4, 2024
Tuesday, November 5, 2024
Wednesday, November 6, 2024
Thursday, November 7, 2024
Friday, November 8, 2024
Saturday, November 9, 2024
Sunday, November 10, 2024

Monday, November 11, 2024
Tuesday, November 12, 2024
Wednesday, November 13, 2024
Thursday, November 14, 2024
Friday, November 15, 2024
Saturday, November 16, 2024
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Monday, November 18, 2024
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Monday, November 25, 2024
Tuesday, November 26, 2024
Wednesday, November 27, 2024
Thursday, November 28, 2024
Friday, November 29, 2024
Saturday, November 30, 2024
Sunday, December 1, 2024

Monday, December 2, 2024
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Wednesday, December 4, 2024
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Monday, December 9, 2024
Tuesday, December 10, 2024
Wednesday, December 11, 2024
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Friday, December 13, 2024
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Sunday, December 15, 2024

Monday, December 16, 2024
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Wednesday, December 18, 2024
Thursday, December 19, 2024
Friday, December 20, 2024
Saturday, December 21, 2024
Sunday, December 22, 2024

Monday, December 23, 2024
Tuesday, December 24, 2024
Wednesday, December 25, 2024

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