Quantum Gravity Seminar (online): Gary T. Horowitz

Speaker: Gary T. Horowitz (UC Santa Barbara)

Spacetime coordinates: Wed @ 14:30, Auditorium A (via zoom)

Zoom Link: https://ucph-ku.zoom.us/j/9295289933?omn=67282578176

Title: Breakdown of effective field theory near cool black holes  

Abstract: We show that extremal rotating and charged  black holes are sensitive probes of new physics. Stringy or quantum  corrections to general relativity are expected to generate higher-curvature terms in the gravitational action. We show that in the presence of these terms, asymptotically flat extremal rotating and charged black holes have curvature singularities on their horizon. Furthermore, near-extremal black holes can have large yet finite tidal forces for infalling observers.