期刊
UNIVERSE
卷 5, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/universe5030082
关键词
scale invariance; Palatini formalism; metric affine gauge theory of gravity
资金
- Estonian Research Council [PRG356]
- CoE grant [TK133]
This article presents an exhaustive classification of metric-affine theories according to their scale symmetries. First it is clarified that there are three relevant definitions of a scale transformation. These correspond to a projective transformation of the connection, a rescaling of the orthonormal frame, and a combination of the two. The most general second order quadratic metric-affine action, including the parity-violating terms, is constructed in each of the three cases. The results can be straightforwardly generalised by including higher derivatives, and implemented in the general metric-affine, teleparallel, and symmetric teleparallel geometries.
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