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arXiv 0812.2918hep-th
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(规范)超引力中的极值黑洞/CFT对应

Extremal Black Hole/CFT Correspondence in (Gauged) Supergravities

David D. K. Chow, M. Cvetic, H. Lu, C. N. Pope

摘要:

我们扩大调查最近提出的克尔/CFT对应的大型类旋转黑洞解规范和非规范超引力。该对应关系最初是针对四维克尔黑洞提出的,它断言极端旋转黑洞近视界区域的量子态与二维手征理论具有全息对偶性,该理论的维拉索罗代数是作为近视界几何的渐进对称性而产生的。实际上在D维上存在[(D-1)/2]个可交换的维拉索罗代数.我们考虑了任意维D中的近视界几何的一般正则类,并证明了在任何这样的度规中,[(D-1)/2]中心荷通过Cardy公式都意味着一个微观熵,它与相应极值黑洞的Bekenstein-Hawking熵一致.在本文的其余部分,我们表明,对于大多数已知的规范超引力旋转黑洞解,以及对于D=4和D=5的四荷和三荷的非规范超引力解,它们的极端近视界几何确实位于规范形之内。这表明,在所有这些例子中,对偶CFTs的微观熵与极端旋转黑洞的贝肯斯坦-霍金熵一致。

英文摘要:

We extend the investigation of the recently proposed Kerr/CFT correspondence to large classes of rotating black hole solutions in gauged and ungauged supergravities. The correspondence, proposed originally for four-dimensional Kerr black holes, asserts that the quantum states in the near-horizon region of an extremal rotating black hole are holographically dual to a two-dimensional chiral theory whose Virasoro algebra arises as an asymptotic symmetry of the near-horizon geometry. In fact in dimension D there are [(D-1)/2] commuting Virasoro algebras. We consider a general canonical class of near-horizon geometries in arbitrary dimension D, and show that in any such metric, the [(D-1)/2] central charges each imply, via the Cardy formula, a microscopic entropy that agrees with the Bekenstein-Hawking entropy of the associated extremal black hole. In the remainder of the paper we show for most of the known rotating black hole solutions of gauged supergravity, and for the ungauged supergravity solutions with four charges in D=4 and three charges in D=5, that their extremal near-horizon geometries indeed lie within the canonical form. This establishes that in all these examples, the microscopic entropies of the dual CFTs agree with the Bekenstein-Hawking entropies of the extremal rotating black holes.

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