On the Microscopic Description of the Kerr Black Hole

          @misc{ scivideos_PIRSA:10060020,
            doi = {10.48660/10060020},
            url = {https://pirsa.org/10060020},
            author = {Maloney, Alexander},
            keywords = {},
            language = {en},
            title = { On the Microscopic Description of the Kerr Black Hole},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2010},
            month = {jun},
            note = {PIRSA:10060020 see, \url{https://scivideos.org/pirsa/10060020}}
          }
          

Abstract

We describe recent progress on the quantum description of the Kerr black hole. Previous descriptions of black hole microstates have relied on the existence of near-horizon regions with conformal symmetry, and hence have only worked for extremal or supersymmetric black holes. We argue that the states of non-extremal black holes can also be understood in terms of a conformal symmetry, the difference being that this symmetry is not geometrically realized. Thus a Kerr black hole is an excited state of a conformal field theory. By making certain (natural) assumptions about the nature of this dual CFT we can compute its density of states. This gives a microscopic computation of the Bekenstein-Hawking entropy of a Kerr black hole with arbitrary mass and angular momentum.