No evidence for violation of the second law in extended black hole thermodynamics
No evidence for violation of the second law in extended black hole thermodynamics
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DOI：
10.1103/physrevd.100.104022
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发表时间：
2019-06
影响因子：
5
通讯作者：
Shi-Qian Hu;Y. Ong;D. Page
中科院分区：
文献类型：
--
作者：
Shi-Qian Hu;Y. Ong;D. Page
最近，一些论文声称，在反de Sitter时空中，近极值黑洞的视界面积--从而也就是熵--可以通过向其中投放粒子来减小。在这篇笔记中，我们指出，这是一个基本假设的结果，即流入粒子的能量只改变黑洞的内部能量，而更物理的假设是它改变了焓(质量)。事实上，在后一种选择下，扩展黑洞热力学第二定律不再被违反。
Recently a number of papers have claimed that the horizon area - and thus the entropy - of near extremal black holes in anti-de Sitter spacetimes can be reduced by dropping particles into them. In this note we point out that this is a consequence of an underlying assumption that the energy of an infalling particle changes only the internal energy of the black hole, whereas a more physical assumption would be that it changes the enthalpy (mass). In fact, under the latter choice, the second law of extended black hole thermodynamics is no longer violated.