arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.01953hep-thgr-qc
收藏

近BPS黑洞的统计力学

The statistical mechanics of near-BPS black holes

Matthew Heydeman, Luca V. Iliesiu, Gustavo J. Turiaci, Wenli Zhao

摘要:

由于低温近极值黑洞的热力学失效,长期以来人们一直认为在极端黑洞和最轻的近极值态之间存在着“热力学质量差”。对于爱因斯坦引力中具有AdS $_2$喉道的非超对称近极值黑洞,没有发现这样的能隙,相反,在该能量尺度下,谱呈现出连续的状态,直到非微扰修正。本文计算了超引力中近BPS黑洞的配分函数,其中出射对称性破缺为$PSU(1,1|2)$。为了可靠地计算这个配分函数,我们表明,引力路径积分可以减少到一个$\mathcal N=4$超对称扩展的Schwarzian理论,我们定义和精确的。与非超对称情形相比,我们发现超引力下的黑洞具有质量隙和与Bekenstein-Hawking面积一致的极大黑洞简并度.我们的结果验证了几个弦论理论,有关的质量间隙的规模和极端微观状态的计数。

英文摘要:

Due to the failure of thermodynamics for low temperature near-extremal black holes, it has long been conjectured that a "thermodynamic mass gap" exists between an extremal black hole and the lightest near-extremal state. For non-supersymmetric near-extremal black holes in Einstein gravity, with an AdS$_2$ throat, no such gap was found. Rather, at that energy scale, the spectrum exhibits a continuum of states, up to non-perturbative corrections. In this paper, we compute the partition function of near-BPS black holes in supergravity where the emergent, broken, symmetry is $PSU(1,1|2)$. To reliably compute this partition function, we show that the gravitational path integral can be reduced to that of a $\mathcal N=4$ supersymmetric extension of the Schwarzian theory, which we define and exactly quantize. In contrast to the non-supersymmetric case, we find that black holes in supergravity have a mass gap and a large extremal black hole degeneracy consistent with the Bekenstein-Hawking area. Our results verify several string theory conjectures, concerning the scale of the mass gap and the counting of extremal micro-states.

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。

↑