  A diffusion equation approach to black hole thermodynamics in Euclidean
sector is proposed. A diffusion equation for a generic in Euclidean sector is
derived from the Bloch equation. Black hole thermodynamics is also derived and
it is found, in particular, that the entropy of a generic Kerr-Newman black
hole is the same, apart from the logarithmic corrections, as the
Bekenstein-Hawking entropy of the black hole.
