Exact microscopic entropy of non-supersymmetric extremal black rings
Exact microscopic entropy of non-supersymmetric extremal black rings
复制标题
非超对称极值黑环的精确微观熵
DOI：
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发表时间：
2008
期刊：
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通讯作者：
R. Emparan
中科院分区：
文献类型：
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作者：
R. Emparan
在这篇简短的论文中，我们表明，视界熵的最大已知类的非超对称极端黑环，多达6个参数，是完全复制的所有值的环半径使用相同的共形场理论的四电荷四维黑洞。一个特别简单的例子是没有任何守恒电荷的偶极黑环。质量被重整化，但它得到的第一个修正可以很容易地理解为相互作用势能。最后，我们强调，即使熵是正确的再现，这只意味着一个部门的手征激发已被确定，但在其他部门的激发的理解仍然需要为了捕捉黑环动力学。
In this brief paper we show that the horizon entropy of the largest known class of non-supersymmetric extremal black rings, with up to six parameters, is exactly reproduced for all values of the ring radius using the same conformal field theory of the four-charge four-dimensional black hole. A particularly simple case is a dipole black ring without any conserved charges. The mass gets renormalized, but the first corrections it receives can be easily understood as an interaction potential energy. Finally, we stress that even if the entropy is correctly reproduced, this only implies that one sector of chiral excitations has been identified, but an understanding of excitations in the other sector is still required in order to capture the black ring dynamics.