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arXiv 1707.06322hep-thgr-qc
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Horndeski黑洞的全息纠缠熵

On holographic entanglement entropy of Horndeski black holes

Elena Caceres, Ravi Mohan, Phuc H. Nguyen

摘要:

我们在一个特殊的张量-标量理论Horndeski引力中研究了纠缠熵。我们的目标是双重的:研究了张量-标量耦合下的纠缠熵的Lewkowycz-Maldacena方案,解决了文献中关于渐近AdS Horndeski黑洞热熵的一个难题.利用压缩锥方法,即在体中引入锥奇点,导出了Horndeski引力中的纠缠熵泛函。分析了体块运动方程的发散结构。要求主导的运动方程的横向分量的发散消失,我们确定的表面,在那里评估的纠缠功能。我们表明,所获得的表面正是最小化所述功能的。通过计算视界上的纠缠熵泛函,我们得到了Horndeski黑洞的热熵,这一结果澄清了文献中的分歧。作为泛函的一个应用,我们用数值方法找到了极小曲面,并研究了纠缠平台。

英文摘要:

We study entanglement entropy in a particular tensor-scalar theory: Horndeski gravity. Our goal is two-fold: investigate the Lewkowycz-Maldacena proposal for entanglement entropy in the presence of a tensor-scalar coupling and address a puzzle existing in the literature regarding the thermal entropy of asymptotically AdS Horndeski black holes. Using the squashed cone method, i.e. turning on a conical singularity in the bulk, we derive the functional for entanglement entropy in Horndeski gravity. We analyze the divergence structure of the bulk equation of motion. Demanding that the leading divergence of the transverse component of the equation of motion vanishes we identify the surface where to evaluate the entanglement functional. We show that the surface obtained is precisely the one that minimizes said functional. By evaluating the entanglement entropy functional on the horizon we obtain the thermal entropy for Horndeski black holes; this result clarifies discrepancies in the literature. As an application of the functional derived we find the minimal surfaces numerically and study the entanglement plateaux.

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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