D-brane configuration and black hole thermodynamics

الأصل · EN

We consider a configuration of strings and solitons in the type IIB superstring theory on M⁵× T⁵, which is composed of a set of arbitrarily-wound D-fivebranes on T⁵ and a set of arbitrarily-wound D-strings on S¹ of the torus. For the configuration, it is shown that number of microscopic states is bounded from above by the exponential of the Hawking-Bekenstein entropy of the corresponding black hole and the temperature of closed string radiation from the D-branes is bounded from below by the Hawking temperature of the black hole. After discussing the necessary and sufficient condition to saturate these bounds, we give some speculations about black hole thermodynamics.