Entropy in (1 + 1)-Dimensional Black Hole

The Klein–Gordon equation and Diracequation are solved in the backgrounds of a (1 +1)-dimensional black hole with 'tHooft andquasiperiodic boundary conditions,respectively. The corresponding entropies of bosons and fermions arecalculated; the divergence in the fermionic entropy hasthe same form as that in the bosonic one, except thatthe coefficient is different.