Effective field theory of black hole perturbations with timelike scalar profile

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• Shinji Mukohyama (Kyoto)
• Monday 06 March 2023, 13:00-14:00
• CMS, Pav. B, CTC Common Room (B1.19) [Potter Room].

If you have a question about this talk, please contact Dr Dong-Gang Wang.

Many dark energy (DE) models are based on a scalar field with timelike gradient. If one hopes to learn something about scalar field DE from astrophysical black holes (BHs) then one needs to consider BH solutions with timelike scalar profiles. In this talk we begin with a review of the 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 timelike scalar field responsible for DE.

This talk is part of the Cosmology Lunch series.

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