Black Hole Entropy and Physics at Planckian Scales
نویسنده
چکیده
where AH is the area of a black hole surface and lP = (h̄G/c) is the Planck length [1, 2]. In black hole physics the Bekenstein-Hawking entropy S plays essentially the same role as in the usual thermodynamics. In particular it allows to estimate what part of the internal energy of a black hole can be transformed into work. Four laws of black hole physics that form the basis in the thermodynamical analogy were formulated in [3]. According to this analogy the entropy S is defined by the response of the free energy F of the system containing a black hole to the change of its temperature: dF = −SdT. (1.2)
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