Exact solutions of the Klein-Gordon equation in the Kerr-Newman background and Hawking radiation

@article{Vieira2014ExactSO,
  title={Exact solutions of the Klein-Gordon equation in the Kerr-Newman background and Hawking radiation},
  author={H. S. Vieira and Valdir Barbosa Bezerra and C. R. Muniz},
  journal={Annals of Physics},
  year={2014},
  volume={350},
  pages={14-28}
}
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TLDR
The separation of variables for the massive complex Klein-Gordon equation in the gravitational and electromagnetic field of a four-parameter black hole is carried out.
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