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arXiv 2008.06793hep-th
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新手征引力

New Chiral Gravity

Luca Ciambelli, Stéphane Detournay, Antoine Somerhausen

摘要:

具有Compre-Song-Strominger(CSS)边界条件的三维引力相空间具有Virasoro和$\hat{u}(1)$ Kaplan-Moody代数的半直积的渐近对称性,并且包含BTZ黑洞,其熵可以用Warped CFT的态简并度来解释.通过将这些边界条件嵌入到拓扑质量引力中,我们观察到在由AdS $_3$半径$\ell$和Chern-Simons耦合$μ$参数化的耦合空间中存在两个特殊点.当$μ= \pm {1\over \ell}$时,渐近对称性退化为手征维拉索罗代数或纯$\hat{u}(1)$ Kaplan-Moody流代数.在这些点上,黑洞具有正能量,而线性激发的能量是非负的。

英文摘要:

The phase space of three-dimensional gravity with Compere-Song-Strominger (CSS) boundary conditions is endowed with asymptotic symmetries consisting in the semi-direct product of a Virasoro and a $\hat{u}(1)$ Kač-Moody algebra, and contains BTZ black holes whose entropy can be accounted for by the degeneracy of states of a Warped CFT. By embedding these boundary conditions in Topologically Massive Gravity, we observe the existence of two special points in the space of couplings parameterized by the AdS$_3$ radius $\ell$ and the Chern-Simons coupling $μ$. When $μ= \pm {1\over \ell}$, the asymptotic symmetries reduce to either a chiral Virasoro algebra or a pure $\hat{u}(1)$ Kač-Moody current algebra. At those points, black holes have positive energy while that of linearized excitations are non-negative.

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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