Speaker
Brooks Thomas
Description
Cosmic stasis is a phenomenon in which the abundances of multiple cosmological energy components — components such as matter, radiation, or vacuum energy — remain effectively constant despite the expansion of the universe. One mechanism which can give rise to an extended period of cosmic stasis is the evaporation of a population of primordial black holes (PBHs). In this talk, I review how PBH evaporation can lead to a stasis epoch and examine the observational consequences of such a modification to the cosmic expansion history. These include implications for inflationary observables, for the stochastic gravitational-wave background, and for the production of dark matter and dark radiation.
Author
Co-authors
Prof.
Keith Dienes
(University of Arizona)
Dr
Lucien Heurtier
(IPPP, Durham)
Dr
Fei Huang
(Weizmann Institute)
Dr
Doojin Kim
(Texas A&M University)
Prof.
Tim M.P. Tait
(University of California, Irvine)
