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SUMMARY:Effective field theory of black hole perturbations with timelike s
 calar profile - Shinji Mukohyama (Kyoto)
DTSTART:20230306T130000Z
DTEND:20230306T140000Z
UID:TALK195436@talks.cam.ac.uk
CONTACT:Dr  Dong-Gang Wang
DESCRIPTION:Many dark energy (DE) models are based on a scalar field\nwith
  timelike gradient. If one hopes to learn something about scalar field DE 
 from astrophysical black holes (BHs) then one needs to consider BH solutio
 ns with timelike scalar profiles. In this talk we begin with a review of t
 he systematic construction of the effective field theory (EFT) describing 
 perturbations around Minkowski and cosmological backgrounds with timelike 
 scalar profiles. We then extend the EFT to arbitrary backgrounds. Finally\
 , as an application of the general EFT\, we study odd-parity perturbations
  around a spherically symmetric\, static black hole background with a time
 like scalar field responsible for DE.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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