Gravitational Waves as a Probe of Fundamental Physics

Gravitational Waves as a Probe of Fundamental Physics
Kent Yagi, University of Virginia
Date and time: Tue, Oct 11, 2022 - 2:30pm
Location: remote via zoom
Category: ACFI Seminar
Abstract:

Recent observations of black holes and neutron stars through

gravitational waves allow us to explore the novel strong-gravity and

extreme-density regime. In this talk, I will explain how we can use

gravitational waves from binary black hole mergers to probe gravitational

physics and those from binary neutron star mergers to study nuclear physics.

For the former, I will review a model-independent test of gravity with

gravitational waves and show its application to test a theory beyond General

Relativity motivated by string theory. In particular, I will present the most

stringent bound on the theory to date.  For the latter, I will describe how we

can infer some of the nuclear parameters and the existence of solid quark cores inside

neutron stars through gravitational wave observations.