Princeton University Gravity Initiative Seminar Series

Abstract: I will present general arguments, based on fundamental physics principles, as to why we should expect a significant, horizon scale, departure from semiclassical gravity inside astrophysical black holes. Then, I will present a simple model which realizes this idea: the frozen star model. I will show that a static frozen star looks exactly like a Schwarzschild  black hole to an external observer, then I will present the rotating frozen star and show that it looks exactly like a Kerr black hole. I will end by discussing the stability and the spectrum of internal modes of the frozen stars and show that they possess an interesting spectrum of non-relativistic modes.