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arXiv · 1911.02528

The Relation Between Automorphism Group and Isometry Group of Left Invariant $ (\alpha,\beta)$-metrics

Masumeh Nejadahmad·Hamid Reza Salimi Moghaddam
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Abstract

This work generalizes the results of an earlier paper by the second author, from Randers metrics to $(\alpha,\beta)$-metrics. Let $F$ be an $(\alpha,\beta)$-metric which is defined by a left invariant vector field and a left invariant Riemannian metric on a simply connected real Lie group $G$. We consider the automorphism and isometry groups of the Finsler manifold $(G,F)$ and their intersection. We prove that for an arbitrary left invariant vector field $X$ and any compact subgroup $K$ of automorphisms which $X$ is invariant under them, there exists an $(\alpha,\beta)$-metric such that $K$ is a subgroup of its isometry group.

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Masumeh Nejadahmad, Hamid Reza Salimi Moghaddam. 2019-11-02. The Relation Between Automorphism Group and Isometry Group of Left Invariant $ (\alpha,\beta)$-metrics. https://doi.org/10.22098/jfga.2023.12784.1088

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