"Microscopic Structure of Black Holes," by Andrea Puhm (UC Santa Barbara)

Date: 
Monday, February 29, 2016 - 2:30pm to 3:30pm
Series: 
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) 4-330
Monday, February 29, 2016
2:30PM

Guest Speaker: Andrea Puhm (UC Santa Barbara)

Talk Title: "Microscopic Structure of Black Holes"

Abstract:

Ever since Hawking’s seminal work leading to the black hole information paradox various attempts to resolve the deep conflict between general relativity and quantum mechanics have been made. Black holes provide an ideal playground for attempting to unmask the secrets of quantum gravity and as such are key protagonists in my work. To resolve the information paradox it has been argued that quantum gravity effects must destroy the classical black hole horizon and replace it by horizon-sized structure.

While rather bold, this claim is supported in string theory whose very ingredients - branes, topology and fluxes - can be used to build such black hole microstates. In a toy model of gravitational collapse, I will argue that these microstate geometries can arise dynamically from quantum tunneling processes and that these effects can stop the collapse to a black hole. Holography provides another tool to study the microscopic description of black holes and my recent work provides a new approach to understanding the conjectured duality between Kerr black holes and conformal field theories. The tools I have used in this work allow to envision the extension of our results to highly-rotating Kerr black holes, and the exploration of possible gravitational wave signatures of the new physics at the horizon we are finding.

Event Attachments: 
Location: 
PAB 4-330