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arXiv 1802.02159gr-qchep-th
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极端黑洞在弦相互作用下的形变

Deformation of extremal black holes from stringy interactions

Baoyi Chen, Leo C. Stein

摘要:

黑洞是研究广义相对论和超越广义相对论的强有力的背景。然而,由于这些理论的复杂性,在超越广义相对论理论中很难找到旋转黑洞的解析解。在本文中,我们解决了由于两个例子弦启发超越GR理论的近视界极值克尔度规的变形:爱因斯坦-爱因斯坦-高斯-邦纳,和动态陈-西蒙斯理论。我们通过利用NHEK的增强对称群和EdGB和dCS的弱耦合极限来实现这一点。我们发现EdGB度量变形具有曲率奇异性,而dCS度量是正则的。从这些解决方案中,我们计算轨道频率,视界面积和熵。这为分析理解超越GR理论中黑洞熵的微观起源奠定了基础。

英文摘要:

Black holes are a powerful setting for studying general relativity and theories beyond GR. However, analytical solutions for rotating black holes in beyond-GR theories are difficult to find because of the complexity of such theories. In this paper, we solve for the deformation to the near-horizon extremal Kerr metric due to two example string-inspired beyond-GR theories: Einstein-dilaton-Gauss-Bonnet, and dynamical Chern-Simons theory. We accomplish this by making use of the enhanced symmetry group of NHEK and the weak-coupling limit of EdGB and dCS. We find that the EdGB metric deformation has a curvature singularity, while the dCS metric is regular. From these solutions we compute orbital frequencies, horizon areas, and entropies. This sets the stage for analytically understanding the microscopic origin of black hole entropy in beyond-GR theories.

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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