期刊
CLASSICAL AND QUANTUM GRAVITY
卷 36, 期 16, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6382/ab2fd5
关键词
black hole symmetries; Carroll group; conservation laws; near-horizon geometry
类别
资金
- Black Hole Initiative (BHI) at Harvard University - John Templeton Foundation
- [ANR-16-CE31-0004]
We show that the geometry of a black hole horizon can be described as a Carrollian geometry emerging from an ultra-relativistic limit where the near-horizon radial coordinate plays the role of a virtual velocity of light tending to zero. We prove that the laws governing the dynamics of a black hole horizon, the null Raychaudhuri and Damour equations, are Carrollian conservation laws obtained by taking the ultra-relativistic limit of the conservation of an energy-momentum tensor; we also discuss their physical interpretation. We show that the vector fields preserving the Carrollian geometry of the horizon, dubbed Carrollian Killing vectors, include BMS-like supertranslations and superrotations and that they have non-trivial associated conserved charges on the horizon. In particular, we build a generalization of the angular momentum to the case of non-stationary black holes. Finally, we discuss the relation of these conserved quantities to the infinite tower of charges of the covariant phase space formalism.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据