Conveners
Plenary
- Katelin Schutz
Plenary
- James Cline (McGill University, (CA))
Plenary
- Robert Brandenberger (McGill University)
Plenary
- Alan Robinson (Université de Montréal)
Plenary
- Gonzalo Alonso Alvarez (University of Toronto)
Plenary
- Pyungwon Ko (KIAS (Korea Institute for Advanced Study))
Plenary
- Yitian Sun (McGill)
Plenary
- Saniya Heeba (McGill University)
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Prof. Hitoshi Murayama (University of California Berkeley (US))07/07/2025, 09:30
Given that all matter around us are composite objects, dark matter may well be composite. I
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describe the simplest version yet of a composite dark matter as dark pions coupled via the
baryon number gauge boson as the dark photon portal. -
Tracy Slatyer07/07/2025, 10:00
Upcoming gamma-ray telescopes offer the prospect of sensitivity to the canonical thermal-relic annihilation cross section up to mass scales of tens of TeV. I will discuss new precise predictions for high-energy gamma-ray signals from the classic "minimal dark matter" benchmark models, including bound-state formation and resummation of large logarithms, in the case where the dark matter...
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Prof. Mariangela Lisanti (Princeton University)07/07/2025, 11:00
The hypothesis of Cold Dark Matter (CDM) has been confirmed on the largest scales of the Universe and must now be stress-tested on sub-galactic scales. Many well-motivated and generic alternatives to CDM can leave spectacular signatures on precisely these scales, affecting the evolution of galaxies as well as their population statistics. Excitingly, over the course of the next decade, a...
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Aaron Vincent (Queen's University)07/07/2025, 11:30
Stars are large, plentiful and the Universe provides them to us for free. They provide us with unique laboratories to test fundamental physics at high densities and temperatures, and their large volumes potentially give us access to very rare processes. While stars have been used for decades to probe fundamental physics, they still offer new exciting avenues to search for...
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Evan McDonough08/07/2025, 09:00
The range of possible masses of particle dark matter spans over many orders of
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magnitude. The extremes of the mass range -- so-called ''superheavy'' and ''ultralight'' dark
matter candidates -- are increasingly attracting attention due to their novel phenomenology and
new developments in production mechanisms. In this talk I will discuss the complementary nature
of superheavy and... -
Dr Chanda Prescod-Weinstein (University of New Hampshire)08/07/2025, 09:30
Over the last decade, one of the most popular solutions to the dark matter problem has been a hypothetical class of particles known as axions or axion-like particles. In this talk, I will discuss why the axion is such an attractive candidate and also explain the challenges we face in determining whether axions are the dark matter and which axion(s) are the dark matter. I will highlight results...
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Elisa Gouvea Mauricio Ferreira (Kavli IPMU)08/07/2025, 10:00
The nature of dark matter remains one of the biggest mysteries in cosmology. Among the many possible candidates, one of the most well-motivated class of models and leading candidate is the ultra-light dark matter (ULDM). ULDM represents the lightest possible dark matter candidates and exhibits wave-like behavior on galactic scales, offering a unique opportunity to probe its properties through...
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Laura Baudis (University of Zurich (CH))08/07/2025, 11:00
The fundamental nature of dark matter remains one of the central open questions in physics. A leading hypothesis is that dark matter consists of new elementary particles, whose masses and interaction cross sections span a vast parameter space. Among the various detection technologies, liquid xenon detectors have emerged as the most sensitive for dark matter particles with masses above a few...
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Seyda Ipek08/07/2025, 11:30
In MSSM with a global U(1) symmetry, the gauginos are psuedo-Dirac particles. The psuedo-Dirac bino can play the role of right-handed neutrinos and generate the light neutrino masses through an inverse seesaw mechanism. In this scenario, the lightness of the neutrino masses is governed by the ratio of the gravitino mass and the messenger scale between the SM and the supersymmetric sector. For...
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Miriam Diamond09/07/2025, 09:00
We are faced with convincing evidence that approximately a quarter of the universe is composed of something whose gravitational effects can be seen in a variety of astrophysical phenomena, but which we have been unable to detect and identify in the laboratory. The majority of physicists agree that this "dark matter" (DM) consists of as-yet-undiscovered subatomic particle(s) that are not...
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Ana Martina Botti (Fermilab)09/07/2025, 09:30
To be completed
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Maxim Pospelov09/07/2025, 10:00
Nuclear reactors are an intense source of radiation emitted in the form of
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different particles of MeV-scale energy.
We revisit several constraints that past and current experiments set on the light weakly coupled
particles. We find new, more stringent
constraints on millicharged particles and dark photons. We also consider pair-production and/or
upscattering of light dark matter, and... -
Renée Hlozek (University of Toronto)10/07/2025, 09:00
The Atacama Cosmology Telescope recently published results from the sixth data release (DR6). I will present these DR6 data and the implications for several cosmological models beyond the standard picture.
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Dr Eleonora Di Valentino (University of Sheffield)10/07/2025, 09:30
The ΛCDM model has long served as the standard paradigm in cosmology, offering a remarkably successful description of the Universe’s evolution. Yet, as observational precision continues to improve, persistent tensions have emerged across a range of probes, including the well-known Hubble constant discrepancy. While individual datasets may each align with ΛCDM, their collective interpretation...
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C. Vafa10/07/2025, 10:00
The Swampland program, which explores the UV consistency conditions of
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quantum gravity, imposes stringent constraints on viable cosmological models of dark energy. In this talk, I begin by reviewing how these ideas motivate the existence of an additional spatial dimension-the so-called dark dimension-at the micron scale, with its gravitational excitations emerging as natural candidates for... -
Dieter Lust (Max-Planck-Institut fuer Kernphysik (MPI))10/07/2025, 11:00
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Cliff Burgess (McMaster & Perimeter)10/07/2025, 11:30
This talk describes recent progress in the Highland Program: an effort to identify useful non-swampy UV clues guiding a low-energy understanding of the Dark Sector.
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Prof. Kimberly Boddy (University of Texas at Austin)11/07/2025, 09:00
Pulsar timing array (PTA) experiments aim to detect nHz-frequency gravitational waves using high-precision timing of millisecond pulsars. Multiple PTA collaborations have recently reported evidence for a stochastic gravitational wave background (SGWB), expected to arise predominantly from a population of inspiraling supermassive black hole binaries. In this talk, I will discuss how PTA...
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Sung Woo YOUN11/07/2025, 09:30
The axion is a highly motivated hypothetical particle that could simultaneously address two major fundamental questions in modern physics—the strong CP problem and the dark matter mystery. A large class of experimental searches exploit the axion-photon coupling, aiming to detect axion-induced photons in the presence of strong magnetic fields. These efforts have advanced significantly in recent...
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Annika Peter11/07/2025, 10:00
Dark matter models which admit large non-destructive self-interactions (self-interacting dark matter, or SIDM) are having a moment, for both particle physics and astrophysics reasons. Of particular interest is how halos and the galaxies within them — especially satellites — evolve. In this talk, I will discuss several approaches to modeling satellite galaxy evolution in SIDM, and connecting...
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Maxim Pospelov
Nuclear reactors are an intense source of radiation emitted in the form of
Go to contribution page
different particles of MeV-scale energy.
We revisit several constraints that past and current experiments set on the light weakly coupled
particles. We find new, more stringent
constraints on millicharged particles and dark photons. We also consider pair-production and/or
upscattering of light dark matter, and... -
Annika Peter
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Maxim Pospelov
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Alexandra Amon (Princeton)