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arXiv 1807.09770hep-thgr-qc
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具有球面和双曲视界的超标度违反黑洞

Hyperscaling violating black holes with spherical and hyperbolic horizons

Juan F. Pedraza, Watse Sybesma, Manus R. Visser

摘要:

对于任意的Lifshitz指数$z$和超标度违反参数$θ$,我们提出了一族新的具有超标度违反渐近性和非平凡视界拓扑的带电黑洞。它们是广义Einstein-Maxwell-Dilaton理论的$(d+2)$维解析解,其中附加了一个支持球面或双曲视界的矢量场。双曲型解只与$1 \le z < 2$和$θ= d(z-1)$的零能量条件一致,这解释了为什么它们在纯Lifshitz情况下不存在。我们进一步研究了这些黑洞在固定电荷系综和固定势系综下的(扩展)热力学,发现相变只发生在具有$1 \le z \le 2$和任意$θ$的球形黑洞中.

英文摘要:

We present a new family of charged black holes with hyperscaling violating asymptotics and non-trivial horizon topology, for arbitrary Lifshitz exponent $z$ and hyperscaling violation parameter $θ$. They are $(d+2)$-dimensional analytic solutions to a generalized Einstein-Maxwell-Dilaton theory with an additional vector field supporting spherical or hyperbolic horizons. The hyperbolic solutions are only consistent with the null energy condition for $1 \le z < 2$ and $θ= d(z-1)$, which explains why they are absent in the pure Lifshitz case. We further study the (extended) thermodynamics of these black holes, both in the fixed charge and fixed potential ensemble, and find that phase transitions only occur for spherical black holes with $1 \le z \le 2$ and any $θ$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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