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arXiv 0811.4393hep-th
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用于极端黑洞的CFT对偶

CFT Duals for Extreme Black Holes

Thomas Hartman, Keiju Murata, Tatsuma Nishioka, Andrew Strominger

摘要:

本文证明了一般四维极值Kerr Newman AdSdS黑洞与二维CFT(手征的一半)是全息对偶的,推广了最近给出的极值Kerr特殊情形的一个论点.具体地说,一般极端黑洞的近视界区域的渐近对称性被证明是由一个维拉索罗代数产生的。导出了对偶CFT中心荷和温度随宇宙学常数、牛顿常数、黑洞电荷和自旋变化的半经典公式。然后,我们表明,假设卡迪公式,微观熵的对偶CFT精确地再现宏观贝肯斯坦-霍金面积定律。这种CFT描述在极端Reissner-Nordstrom极限中变得奇异,在那里黑洞没有自旋。在这一点上的第二个对偶CFT描述,其中的U(1)规范对称性的整体部分被提升到一个维拉索罗代数。这第二个描述也被发现重现面积定律。各种进一步的概括,包括更高的维度进行了讨论。

英文摘要:

It is argued that the general four-dimensional extremal Kerr-Newman-AdS-dS black hole is holographically dual to a (chiral half of a) two-dimensional CFT, generalizing an argument given recently for the special case of extremal Kerr. Specifically, the asymptotic symmetries of the near-horizon region of the general extremal black hole are shown to be generated by a Virasoro algebra. Semiclassical formulae are derived for the central charge and temperature of the dual CFT as functions of the cosmological constant, Newton's constant and the black hole charges and spin. We then show, assuming the Cardy formula, that the microscopic entropy of the dual CFT precisely reproduces the macroscopic Bekenstein-Hawking area law. This CFT description becomes singular in the extreme Reissner-Nordstrom limit where the black hole has no spin. At this point a second dual CFT description is proposed in which the global part of the U(1) gauge symmetry is promoted to a Virasoro algebra. This second description is also found to reproduce the area law. Various further generalizations including higher dimensions are discussed.

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