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arXiv 1609.01629hep-thgr-qc
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具有极小长度的Schwarzschild-AdS黑洞的热力学

Thermodynamics of the Schwarzschild-AdS black hole with a minimal length

Yan-Gang Miao, Yu-Mei Wu

摘要:

利用黑洞的质量涂抹方案,我们研究了黑洞的热力学。两个有趣的模型被认为是。一个是自正则的Schwarzschild-AdS黑洞,其质量密度由量子氢原子的概率密度的类似物给出。另一个模型是相同的黑洞,但其质量密度被选为径向坐标的有理分式函数。两个质量密度实际上都是$δ$函数的解析表达式。我们分析了这两个模型的相结构,通过调查在恒压下的热容和吉布斯自由能在等温等压系综。由于存在极小长度,即使吉布斯自由能为正,两种模型也不能衰变为纯热辐射。此外,我们扩展我们的分析,以一般的质量涂抹形式,也与$δ$ -功能,并指出类似的热力学性质的各种可能的质量涂抹形式的基础上的$δ$ -功能。

英文摘要:

Using the mass-smeared scheme of black holes, we study the thermodynamics of black holes. Two interesting models are considered. One is the self-regular Schwarzschild-AdS black hole whose mass density is given by the analogue to probability densities of quantum hydrogen atoms. The other model is the same black hole but whose mass density is chosen to be a rational fractional function of radial coordinates. Both mass densities are in fact analytic expressions of the $δ$-function. We analyze the phase structures of the two models by investigating the heat capacity at constant pressure and the Gibbs free energy in an isothermal-isobaric ensemble. Both models fail to decay into the pure thermal radiation even with the positive Gibbs free energy due to the existence of a minimal length. Furthermore, we extend our analysis to a general mass-smeared form that is also associated with the $δ$-function, and indicate the similar thermodynamic properties for various possible mass-smeared forms based on the $δ$-function.

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