单模引力中的物理电荷与保角不变性

IF 1.4 4区物理与天体物理 Q3 PHYSICS, NUCLEAR

International Journal of Modern Physics a Pub Date : 2023-09-01 DOI:10.1142/s0217751x23501324

Enrique Alvarez, J. Anero, Irene Sanchez-ruiz

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引用次数: 1

摘要

存在一个关于幺模引力（UG）的公式，其中从一个不受限制的度量中得到了幺模度量γ“|g|´1 n gµΓ。这个不受限制的度量只能定义为Weyl重缩放。然而，像ADM能量或视界熵这样的物理电荷通常不是Weyl不变量。本文给出了一些物理电荷的Weyl不变性定义，并举例说明了Schwarzschild时空的Painlev´e-Gullstrand扩展的结果

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Physical charges versus conformal invariance in Unimodular Gravity

There is a formulation of unimodular gravity (UG) in which the unimodular metric is obtained out of an unrestricted one as γ µν “ | g | ´ 1 n g µν . This unrestricted metric is only deﬁned up to a Weyl rescaling. Physical charges like ADM energy or horizon entropy, however, are not Weyl invariant in general. In this paper a Weyl invariant deﬁnition of some physical charges is given, and the results are illustrated for the Painlev´e-Gullstrand extension of Schwarzschild spacetime

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来源期刊

International Journal of Modern Physics a 物理-物理：核物理

CiteScore

3.00

自引率

12.50%

发文量

283

审稿时长

3 months

期刊介绍： Started in 1986, IJMPA has gained international repute as a high-quality scientific journal. It consists of important review articles and original papers covering the latest research developments in Particles and Fields, and selected topics intersecting with Gravitation and Cosmology. The journal also features articles of long-standing value and importance which can be vital to research into new unexplored areas.