非热平衡Schwarzschildde Sitter黑洞的熵

Abstract

Abstract:

Thinking of KleinGordon equation in Schwarzschildde Sitter spacetime, the authors calculate the free energy and entropy of this kind of black hole via brickwall method. It is difficult to calculate the free energy because there are twohorizons whose temperature is different from one another. Taking improved brickwall model, which means that the free energy and entropy are mainly from a thinlayer close to the horizon, the authors overcame the problem successfully and got a goodresult. It is found that the entropy of this system is 1/4 of the sum of the areas of the two event horizons. This is coincided to the result expected. The entropy of this system not only includes the contribution of the black hole horizon,but also includes the contribution of the cosmological horizon. It is found that there is an internal relation between the event horizon and the entropy. The authors also understand more about what is the brickwall model.

Key words: de Sitter spacetime, Schwarzschild black hole, Entropy of black hole;Brickwall method, Horizon.

CLC Number:

LIU Wen-Biao, DIAO Zheng-. The Entropy of Thermal Nonequilibrium |Schwarzschildde Sitter Spacetime[J].Acta mathematica scientia,Series A, 2003, 23(2): 169-174.

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The Entropy of Thermal Nonequilibrium |Schwarzschildde Sitter Spacetime

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