黑洞上的扭曲软光子头发植入物

Supertranslation Hair of Schwarzschild Black Hole: A Wilson Line Perspective

We demonstrate within the quantum field theoretical framework that an asymptotic particle falling into the black hole implants soft graviton hair on the horizon, conforming with the classical proposal of Hawking, Perry and Strominger. A key ingredient to this result is the construction of gravitational Wilson line dressings of an infalling scalar field, carrying a definite horizon supertranslation charge. It is shown that a typical Schwarzschild state is degenerate, and can be labeled by different soft supertranslation hairs parametrized for radial trajectories by the mass and energy of the in…

Black Hole Hair Removal For N=4 CHL Models

Although BMPV black holes in flat space and in Taub-NUT space have identical near-horizon geometries, they have different indices from the microscopic analysis. For K3 compactification of type IIB theory, Sen et al in a series of papers identified that the key to resolving this puzzle is the black hole hair modes: smooth, normalisable, bosonic and fermionic degrees of freedom living outside the horizon. In this paper, we extend their study to N = 4 CHL orbifold models. For these models, the puzzle is more challenging due to the presence of the twisted sectors. We identify hair modes in the unt…

Quantum memory for Rindler supertranslations

The Rindler horizon in Minkowski spacetime can be implanted with supertranslation hair by a matter shock wave without planar symmetry, and the hair is observable as a supertranslation memory on the Rindler family of uniformly linearly accelerated observers. We show that this classical memory is accompanied by a supertranslation quantum memory that modulates the entanglement between the opposing Rindler wedges in quantum field theory. A corresponding phenomenon across a black hole horizon may play a role in Hawking, Perry and Strominger's proposal for supertranslations to provide a solution to …

Horndeski理论中带毛黑洞的线性不稳定性

Linear instability of hairy black holes in Horndeski theory

本研究聚焦Horndeski理论的一个子类及对应解析背景解，通过分析奇宇称引力微扰与二阶拉格朗日量，发现事件视界邻域存在内生于拉格朗日量结构的不稳定性，可排除该模型的特定几何结构，为后续相关研究提供参考。

三维时空中的软毛视界

Soft hairy horizons in three spacetime dimensions

我们讨论了一些方面的软毛黑洞和一种新的“软毛宇宙学”，包括详细推导的度量公式，结果平坦的空间，和新的意见有关的熵。值得注意的是，就像在负宇宙学常数的情况下一样，我们发现具有视界的局部平坦时空的渐近对称性是由海森堡代数的无限个副本决定的，这些副本产生了软毛后代。我们还证明了三维Bondi-Metzner-Sachs代数的生成元是由仿射u（1）流通过扭曲Sugawara-like结构的复合算子产生的。然后，我们讨论熵的宏观上，微观上和微观上发现，最近导出的微观公式与Korteweg-de Vries层次的边界条件完全符合我们的结果的熵和基态能量。我们的结论与相关的方法进行比较。

具有软毛的高自旋黑洞

Higher Spin Black Holes with Soft Hair

我们构造了一套新的边界条件，更高的自旋引力，最近的“软海森堡头发”的启发-建议广义相对论的三维Anti-de Sitter。渐进对称代数由一组仿射$\hat u(1)$当前代数组成。其相关的正则电荷产生更高自旋的软毛。我们首先讨论了自旋为3的情形，然后将我们的一些主要结果推广到自旋为2的情形，其中许多结果与自旋为2的结果相似：渐近$W_3$代数的生成元自然地从$\hat u(1)$荷的复合算子通过扭曲Sugawara构造而产生;我们的边界条件保证了欧几里德解空间的正则性，而与荷的值无关;我们称之为“高自旋黑花”的解是静止的，但不一定是球对称的。最后，我们导出了高自旋黑花的熵，发现对于连续连接到BTZ黑洞的分支，它只依赖于仿射纯引力零模。使用我们的映射到$W$ -代数电流，我们恢复众所周知的表达式更高的自旋熵。我们还解决了更高的自旋黑花的度量形式主义，并实现与以前的结果完全一致。