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arXiv 1801.09574gr-qchep-th
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$f (R)$引力场中静态黑洞的扰动热力学和热力学几何

Perturbed thermodynamics and thermodynamic geometry of a static black hole in $f (R)$ gravity

Sudhaker Upadhyay, Saheb Soroushfar, Reza Saffari

摘要:

本文研究了$f(R)$引力场中的静态黑洞。我们概括了这个黑洞的修正热力学熵的表达式,由于周围的平衡小波动。同时,我们还研究了该黑洞的几何热力学(GTD),考察了几何热力学方法中曲率标量对该黑洞相变点的适应性。此外,我们还研究了修正参数对该黑洞热力学行为的影响。我们观察到Ruppeiner度规的曲率标量的奇点与热容的零点完全重合,并且随着修正参数的增大而发生偏离。

英文摘要:

In this paper, we consider a static black hole in $f(R)$ gravity. We recapitulate the expression for corrected thermodynamic entropy of this black hole due to small fluctuations around equilibrium. Also, we study the geometrothermodynamics (GTD) of this black hole and investigate the adaptability of the curvature scalar of geothermodynamic methods with phase transition points of this black hole. Moreover, we study the effect of correction parameter on thermodynamic behaviour of this black hole. We observe that the singular point of the curvature scalar of Ruppeiner metric coincides completely with zero point of the heat capacity and the deviation occurs with increasing correction parameter.

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