Analytic Solutions of The Wheeler-DeWitt Equation in Spherically   Symmetric Space-time
  We study the quantum theory of the Einstein-Maxwell action with a cosmological term in the spherically symmetric space-time, and explored quantum black hole solutions in Reissner-Nordstrom-de Sitter geometry. We succeeded to obtain analytic solutions to satisfy both the energy and momentum constraints. 
Masakatsu Kenmoku, Hiroto Kubotani, Eiichi Takasugi and Yuki Yamazaki