The entropy of a quantum field in a charged Kerr black hole

We calculate the entropies of a system of classical particles and a quantum scalar field by using the brick wall method in a thermal bath in a charged Ken black hole spacetime. The leading terms at the Hartle-Hawking temperature T-H = kappa/2 pi are given by S-cl approximate to N 1n(A(b)/epsilon(2)), and S approximate to N'A(H)/epsilon(2)...更多