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arXiv 2603.18072gr-qc
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关于三维空间中具有引力发的近视界电荷黑洞的进一步研究

More on near-horizon charges black holes with gravitational hair in three dimensions

Silpakorn University(素可泰大学);Universidad de Concepción(康塞普西翁大学)

Seyed Naseh Sajadi, Supakchai Ponglertsakul, Julio Oliva

AI总结:

本文研究三维空间中具有引力发的黑洞的近视界电荷,通过修正相空间方法探讨高曲率引力中的普遍行为,计算了旋转BTZ时空的近视界渐近对称性及电荷。

摘要:

为继续探索高曲率引力中的近视界电荷,我们首先对适用于任意引力理论的协变相空间方法进行了全面修订和公式推导,适用于任意维度的任意高阶Riemann张量理论。这些结果可应用于不同设定,特别是弦理论的α'修正中,其中II型理论中爱因斯坦-希尔伯特拉格朗日量的第一修正为α'^3 R^4。然后,我们测试了这些公式,以旋转BTZ时空的近视界渐近对称性,一致地恢复了黑洞热力学第一定律。最近发现,一部分高曲率引力理论允许具有引力发的黑洞,其熵可以微观上计算,如新巨引力理论。在这种情况下,理论的四个最大对称真空重合,当线性化围绕该真空时,理论获得额外的规范对称性。我们研究了近视界渐近对称性并计算了相关电荷,包括静态和旋转的发黑洞,扩展至R^4,此前仅做到二次项。为了使工作连续,我们在附录中报告了通用拉格朗日量的显式表达式。

英文摘要:

With the aim of continuing the exploration of near-horizon charges in higher-curvature gravity, searching for sectors leading to universal behaviors, we first provide a thorough revision and formulae of the covariant phase-space method applied to arbitrary gravitational theories containing up to quartic terms in the Riemann tensor in arbitrary dimension. These results can be applied in diverse setups, in particular in the context of $α'$ corrections to String Theory, where it is known that in Type II theories, the first correction to the Einstein-Hilbert Lagrangian goes as $α'^3 \mathcal{R}^4$. Then, we test these formulae for near horizon asymptotic symmetries of the rotating BTZ spacetime where the first law of black hole thermodynamics is consistently recovered. It was recently realized that a subset of these higher curvature gravities do admit black holes with gravitational hair, whose entropy can be microscopically accounted for, as is the case of New Massive Gravity. In this case, the four maximally symmetric vacua of the theory coincide, and the theory acquires an extra gauge symmetry when linearized around such a vacuum. We study the near-horizon asymptotic symmetries and compute the associated charges, both in the static and rotating hairy black holes, extending up to $\mathcal{R}^4$, a work that was previously done only up to a quadratic term. In order to allow for a continuous lecture on the work, we report the explicit expressions of the general Lagrangians in the appendices.

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