Phenomenology 2022 Symposium: From Virtual to Real

Session

Cosmology I

9 May 2022, 14:15

Lawrencee Hall 107

Conveners

Cosmology I

• Kim Berghaus (Johns Hopkins University)

214. The Hubble tension

Francis-Yan Cyr-Racine (University of New Mexico)

09/05/2022, 14:15

24. Gravitational Waves from Early Universe Turbulent Sources at the QCD Scale

Emma Clarke

09/05/2022, 14:45

Gravitational waves (GWs) may be sourced by hydrodynamic and hydromagnetic turbulent sources in the early universe at epochs such as the cosmological quantum-chromodynamic (QCD) transition. I will discuss the results of numerical simulations of GWs from the QCD scale induced by various models of primordial turbulence: purely hydrodynamical turbulence induced by fluid motions and...

15. Detecting High-Frequency Gravitational Waves with Microwave Cavities

Jan Schütte-Engel

09/05/2022, 15:00

We give a detailed treatment of electromagnetic signals generated by gravitational waves (GWs) in resonant cavities. We show that it is crucial to carry out the signal calculation in a preferred frame for the laboratory, the proper detector frame. The proper detector frame metric is obtained by resumming short-wavelength effects to provide analytic results that are exact for GWs of arbitrary...

59. Detecting the stochastic gravitational wave background from massive gravity with pulsar timing arrays

Qiuyue Liang

09/05/2022, 15:15

We explore the potential of pulsar timing arrays (PTAs) such as NANOGrav, EPTA, and PPTA to detect the stochastic gravitational wave background in theories of massive gravity. In general relativity, the function describing the dependence of the correlation between the arrival times of signals from two pulsars on the angle between them is known as the Hellings-Downs curve. We compute the...

21. A Cosmological Lithium Solution from Discrete Gauged Baryon Minus Lepton Number

Seth Koren

09/05/2022, 15:30

We propose the infrared gauge symmetry of our sector includes an unbroken discrete gauged subgroup of baryon minus lepton number of order 2 x 3 colors x 3 generations = 18, the inclusion of which does not modify local physics. We UV complete this at Λ as the familiar U(1)_{B-NcL} Abelian Higgs theory, and the early universe phase transition forms cosmic strings which are charged under an...

17. Variability in Quasar Light Curves: using quasars as standard candles

Rance Solomon

09/05/2022, 15:45

A relation between the variational slope, $s_F$ , and the mean absolute magnitude, $\langle M \rangle$, in the light curves of 58 spectroscopically confirmed quasars is measured with a dispersion of 0.15dex. Assuming it holds for quasars in general, not only does this relation add to our working knowledge of quasar variability but it also shows great promise at accurately measuring luminosity...