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arXiv 0906.4910hep-th
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黑洞熵、平坦方向和高阶导数

Black hole entropy, flat directions and higher derivatives

S. Bellucci, S. Ferrara, A. Shcherbakov, A. Yeranyan

摘要:

考虑了Einstein-Maxwell作用量的高阶导数修正,并得到了极值黑洞熵修正的显式形式。我们从小黑洞的角度和经典黑洞势呈现平坦方向的情况下推测这些修正的性质。一个特别注意的问题是几个解决方案,包括大,小黑洞的有效黑洞潜力的海森矩阵的使用性能的稳定性。这是通过使用在熵函数形式主义内导出的这种矩阵的模型独立表达式来完成的。

英文摘要:

Higher order derivative corrections to the Einstein--Maxwell action are considered and an explicit form is found for the corrections to the entropy of extremal black holes. We speculate on the properties of these corrections from the point of view of small black holes and in the case when the classical black hole potential exhibits flat directions. A particular attention is paid to the issue of stability of several solutions, including large and small black holes by using properties of the Hessian matrix of the effective black hole potential. This is done by using a model independent expression for such matrix derived within the entropy function formalism.

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