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arXiv 1609.07992gr-qc
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Reissner Nordström黑洞的热力学测地线

Thermodynamic Geodesics of a Reissner Nordström Black Hole

Christine R. Farrugia, Joseph Sultana

摘要:

从质量表象中热力学平衡态空间的几何热力学度规出发,利用数值方法分析了孤立的超大质量Reissner Nordström黑洞的热力学测地线.通过考虑霍金辐射和施温格对产生过程,得到了适当的约束条件。我们按照Hiscock和Weems的工作对黑洞进行建模。由此可以推导出测地线所建立的黑洞极点的熵$S$与电荷$Q$之间的关系随黑洞质量的变化而变化。实际上,极值黑洞的熵的表达式是测地线方程的精确解。我们还发现,在某些情况下,测地线描述的演变所带来的不断发射的霍金辐射和带电粒子对。

英文摘要:

Starting from a Geometrothermodynamics metric for the space of thermodynamic equilibrium states in the mass representation, we use numerical techniques to analyse the thermodynamic geodesics of a supermassive Reissner Nordström black hole in isolation. Appropriate constraints are obtained by taking into account the processes of Hawking radiation and Schwinger pair--production. We model the black hole in line with the work of Hiscock and Weems. It can be deduced that the relation which the geodesics establish between the entropy $S$ and electric charge $Q$ of the black hole extremises changes in the black hole's mass. Indeed, the expression for the entropy of an extremal black hole is an exact solution to the geodesic equation. We also find that in certain cases, the geodesics describe the evolution brought about by the constant emission of Hawking radiation and charged-particle pairs.

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