MS Seminar (Mathematics - String Theory)

Speaker: Wei Song (The Institute of Theoretical Physics, Chinese Academy of Sciences)
Title: The Kerr/CFT Correspondence
Date: Thu, Apr 02, 2009, 15:30 - 17:00
Place: Seminar Room at IPMU Prefab. B
Abstract: Black holes are ideal laboratories to study quantum gravity, and holography principle is essential to understand black hole physics. It is believed that the entropy of black holes are accounted for by physics near the horizon. To understand extremal Kerr black holes, we studied the near horizon region, and found a consistent boundary condition for the excitations. Under the chosen boundary condition, the asymptotic symmetry group is found to be given by a set of Virasoro generators, which is further mapped to the conformal group of a chiral conformal field theory. Based on this, we made the conjecture that quantum gravity in extreme Kerr black holes is holographic dual to a chiral conformal field theory with the central charge given by the angular momentum of the black hole. The first evidence is that we successfully get a microscopic entropy from the CFT, which agrees exactly with Bekenstein-Hawking entropy.