Thermodynamics of AdS black holes in Einstein-Scalar gravity

Thermodynamics of AdS black holes in Einstein-Scalar gravity
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爱因斯坦标量引力中 AdS 黑洞的热力学

DOI:
10.1007/jhep03(2015)165
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发表时间:
2014-08
期刊:
The Journal of High Energy Physics
影响因子:
--
通讯作者:
Wen Qiang
Wen Qiang
中科院分区:
其他
文献类型:
--
作者:
Lu H.;Pope C. N.;Wen Qiang

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研究了在爱因斯坦引力作用下n维静态渐近AdS黑洞的热力学。如果标量场的质量平方是负的,并且在Breitenlohner-Freedman界之上,那么具有非平凡标量毛的黑洞就可以存在。我们使用沃尔德过程来推导这些黑洞的热力学第一定律,展示标量毛发(或“电荷”)如何在表达式中发挥重要作用。一般来说,我们表明黑洞质量可以通过分离Wald构造中产生的哈密顿量的可积(不可积)变化来推导出来,这与使用重整化全息应力张量计算的质量是一致的,并且在定义它的情况下,与使用Ashtekar, Magnon和Das的共形方法计算的质量是一致的。对于这些理论中的光滑孤子解,也可以给出类似的论证。黑洞和孤子的解都不能被明确地构造出来,我们进行了数值分析来证明它们的存在,并对我们的一些热力学结果提供了近似的检查。
We study the thermodynamics of n-dimensional static asymptotically AdS black holes in Einstein gravity coupled to a scalar field with a potential admitting a stationary point with an AdS vacuum. Such black holes with non-trivial scalar hair can exist provided that the mass-squared of the scalar field is negative, and above the Breitenlohner-Freedman bound. We use the Wald procedure to derive the first law of thermodynamics for these black holes, showing how the scalar hair (or “charge”) contributes non-trivially in the expression. We show in general that a black hole mass can be deduced by isolating an integrable contribution to the (non-integrable) variation of the Hamiltonian arising in the Wald construction, and that this is consistent with the mass calculated using the renormalised holographic stress tensor and also, in those cases where it is defined, with the mass calculated using the conformal method of Ashtekar, Magnon and Das. Similar arguments can also be given for the smooth solitonic solutions in these theories. Neither the black hole nor the soliton solutions can be constructed explicitly, and we carry out a numerical analysis to demonstrate their existence and to provide approximate checks on some of our thermodynamic results.
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