[Zhang, Cheng-Yong] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China
The electrovac axisymmetric extreme isolated horizon (IH)/conformal field theory (CFT) correspondence is considered. By expansion techniques under the Bondi-like coordinates, it is proved that the near-horizon geometry of electrovac axisymmetric extreme IH is unique. Furthermore, explicit coordinate transformation between the Bondi-like coordinates and the Poincare-type coordinates for the near-horizon metric of the extreme Kerr-Newmann spacetime is found. Based on these analyses and the thermodynamics of the IH, then, the Kerr/CFT correspondence is generalized to nonstationary extreme black holes with electromagnetic fields.