Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series APC-TH
Subjects gr-qc
Date Tuesday 26 November 2019
Time 14:00
Institute APC
Seminar Room 646A - Mondrian
Speaker's Last Name Chen
Speaker's First Name Pisisn
Speaker's Email Address
Speaker's Institution National Taiwan University
Title Modified theories of gravity and their tests via gravitational waves
Abstract In this talk we will review some selected modified theories of gravity and study their cosmological and astrophysical implications. In particular, we investigate the quasi-normal modes (QNMs) for black hole solutions in the following modified gravity theories: the Palatini f(R) gravity, the EiBI gravity, a class of nonsingular black holes which can be treated as the vacuum solution of a family of conformal gravity theories, and the generalized energy- momentum squared gravity. The master equations describing the QNMs are derived, and the QNM frequencies are evaluated with the Wentzel-Kramers- Brillouin (WKB) method and the eikonal approximation. As expected, the QNM spectra of these modified black holes would deviate from their GR counterparts, indicating the possibility of testing these black hole solutions with the help of future gravitational wave detections.
arXiv Preprint Number

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