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arXiv 1001.3598hep-th
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在AdS和Lifshitz背景下高导数重力场的边界应力张量

A boundary stress tensor for higher-derivative gravity in AdS and Lifshitz backgrounds

Olaf Hohm, Erik Tonni

摘要:

我们研究了曲率平方理论的布朗约克应力张量。这就需要一个广义的Gibbons-Hawking项来建立适定的变分原理,这是通过引入一个辅助张量场来减少导数的数量而以一种通用的方式实现的。我们研究边界应力张量,从而定义为特殊情况下的“大规模的重力”在三维空间,这增加了爱因斯坦-希尔伯特项的一个特定的曲率平方项。它表明,一个获得有限的结果后,增加了一个“边界宇宙学常数”作为反项,在所谓的手征点消失的物理参数上AdS。我们得到已知的和新的结果,如中心荷的值或质量的黑洞解,从而确认我们的处方计算的应力张量。最后,我们检查最近构造的Lifshitz真空和一个新的黑洞解,是渐近Lifshitz,我们提出了一个新的和协变反项这种情况下。

英文摘要:

We investigate the Brown-York stress tensor for curvature-squared theories. This requires a generalized Gibbons-Hawking term in order to establish a well-posed variational principle, which is achieved in a universal way by reducing the number of derivatives through the introduction of an auxiliary tensor field. We examine the boundary stress tensor thus defined for the special case of `massive gravity' in three dimensions, which augments the Einstein-Hilbert term by a particular curvature-squared term. It is shown that one obtains finite results for physical parameters on AdS upon adding a `boundary cosmological constant' as a counterterm, which vanishes at the so-called chiral point. We derive known and new results, like the value of the central charges or the mass of black hole solutions, thereby confirming our prescription for the computation of the stress tensor. Finally, we inspect recently constructed Lifshitz vacua and a new black hole solution that is asymptotically Lifshitz, and we propose a novel and covariant counterterm for this case.

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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