Kerr-AdS黑洞的基于独立联络形式拉氏量的守恒量
Conserved quantities of Kerr-AdS black holes based on a connection independent Lagrangian
王耀 1郭伟杰 1彭俊金2
作者信息
- 1. 贵州师范大学物理与电子科学学院,贵阳 550001
- 2. 贵州师范大学物理与电子科学学院,贵阳 550001;贵州师范大学贵州省射电天文数据处理重点实验室,贵阳 550001
- 折叠
摘要
基于爱因斯坦引力理论的独立联络形式,由诺特定理可以导出一个含任意参考背景仿射联络的推广Katz-Bicak-Lynden-Bell(KBL)势,借此得到一个守恒量定义式.本文把该定义式应用于渐近anti-de Sitter(AdS)且转动的Kerr-AdS黑洞时空的质量与角动量的定义,给出了与其他标准方法一致的结果.特别地,本文首次构造了一个比通常KBL超势中的参考背景联络更具一般性的新联络,相关结果表明KBL方法中的参考背景联络不具有唯一性,而对它的基本要求就是保持理论的协变性.
Abstract
On the basis of a connection-independent Lagrangian for Einstein gravity,a generalized Katz-Bicak-Lynden-Bell(KBL)potential that contains an arbitrary affine connection is derived.In light of the potential,a formula for conserved charges can be proposed.In the present paper,such a formula suc-ceeds in the definition of the mass and angular momentum for Kerr-AdS black holes.Particularly,we have constructed a new more general reference background connection in comparison with the Levi-Civita one adopted in the KBL superpotential.This further demonstrates that the reference background con-nection in the KBL method is not unique and it plays a fundamental role in preserving the covariance of the gravity theory.
关键词
Kerr-AdS黑洞/引力场的守恒荷/KBL方法/Kerr黑洞Key words
Kerr-AdS black hole/Conserved charges for gravitational field/The KBL method/Kerr black hole引用本文复制引用
基金项目
国家自然科学基金(11865006)
贵州省自然科学基金([2018]5769)
出版年
2024