21–25 Jul 2025
Durham
Europe/London timezone

Cosmological Stasis and Its Observational Signatures

22 Jul 2025, 16:20
20m
E005

E005

Speaker

Brooks Thomas

Description

Cosmological stasis is a phenomenon wherein the abundances of multiple cosmological energy components with different equations of state remain constant for an extended period despite the expansion of the universe. In this talk, I review the how stasis arises and discuss the possible observational implications of this phenomenon. These include characteristic imprints in the stochastic gravitational-wave background and an enhanced growth of perturbations in the density of matter on small scales.

Author

Brooks Thomas

Co-authors

Prof. Keith R. Dienes (University of Arizona) Lucien Heurtier (King's College London) Dr Fei Huang (Weizmann Institute) Prof. Timothy M. P. Tait (University of California, Irvine) Ms Anna Paulsen (Brown University) Mr Daniel Hoover (Lafayette College)

Presentation materials