Causality and Solar System Bounds, Implications for Testing General Relativity

Abstract

In this talk, the speaker will discuss prospects for testing general relativity from GW interferometers like LIGO/ Virgo. Within pure gravity, the only possible way deviations can arise is from the existence of higher order derivative corrections, namely higher powers of the Riemann curvature tensor, in the effective action. However, the speaker shows that models that give rise to such effects, suffer from other problems. Then he goes beyond pure gravity, and discusses a class of models that are allowed by general considerations from causality in the form of a new light scalar with novel dynamics. The speaker will discuss how we might test this with studies of neutron stars.


About the Speaker

Prof. Mark HERTZBERG is an Associate Professor at Tufts University. His research is in theoretical cosmology, with connections to particle physics and astrophysics. He did his Undergraduate and Master’s degrees at The University of Sydney, and his PhD at the Massachusetts Institute of Technology (MIT). He completed his post-docs at Stanford University and MIT.


About the Center for Fundamental Physics

For more information, please refer to https://cfp.hkust.edu.hk/.


For Attendees' Attention

Seating is on a first come, first served basis.