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SUMMARY:A Falsifiable Fingerprint of Cosmological Stasis: Detecting Imprin
 ts of Stasis in the Inflationary Gravitational Wave Background
DTSTART:20261021T093000Z
DTEND:20261021T103000Z
DTSTAMP:20261104T091200Z
UID:indico-event-1713815@indico.cern.ch
DESCRIPTION:Speakers: Anne-Katherine Burns (UC Irvine)\n\nCosmological sta
 sis is a dynamical fixed point of the early universe in which the fraction
 al energy densities of multiple components stay constant despite Hubble ex
 pansion\, holding the total equation of state\, w_s\, fixed over many e-fo
 lds. Because w_s is exactly constant\, the tensor mode equation reduces to
  an exact Bessel equation\, and the imprint of any stasis epoch on the inf
 lationary gravitational wave background follows in closed form from just t
 wo inputs: w_s and the duration ΔN. In this talk I will present this temp
 late\, which applies uniformly across every known microphysical realizatio
 n of stasis. I will discuss the fact that when we map this signature onto 
 current and planned detectors\, BBO and DECIGO can detect enhancement scen
 arios with w_s > 1/3 down to a tensor-to-scalar ratio of ~10^(-9)\, decoup
 ling the signal from the tensor amplitude. Finally\, I will present our re
 sults for recurrent stasis. In these scenarios\, N successive epochs produ
 ce a comb of spectral features whose amplitude steps depend only on local 
 physics\, each supplying an independent test of the same relation and maki
 ng the comb the sharpest discriminator against early matter domination\, k
 ination\, and early dark energy.\n\nhttps://indico.cern.ch/event/1713815/\
 n\nZoom: https://cern.zoom.us/j/66371577801?pwd=TjMvLzlFZTY2QXlQMTBmWkcxVm
 9TUT09
LOCATION:4/2-011 - TH common room (CERN)
URL:https://indico.cern.ch/event/1713815/
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