Now showing items 1-2 of 2

    • Asymptotic Symmetries and Charges in De Sitter Space 

      Anninos, Dionysios; Ng, Gim Seng; Strominger, Andrew E. (Institute of Physics Publishing, 2011)
      The asymptotic symmetry group (ASG) at future null infinity \((I^+)\) of four-dimensional de Sitter spacetimes is defined and shown to be given by the group of three-dimensional diffeomorphisms acting on \(I^+\). Finite ...
    • Black Hole Superradiance From Kerr/CFT 

      Bredberg, Irene; Hartman, Thomas; Song, Wei; Strominger, Andrew E. (Springer Verlag, 2010)
      The superradiant scattering of a scalar field with frequency and angular momentum (w,m) by a near-extreme Kerr black hole with mass and spin (M, J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. ...