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arXiv 1001.2667gr-qchep-th
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$(α,β)$型Finsler空间的等距群与甚狭义相对论的对称性

Isometric group of $(α,β)$-type Finsler space and the symmetry of Very Special Relativity

Xin Li, Zhe Chang, Xiaohuan Mo

摘要:

建立了一般Finsler空间的Killing方程。证明了$(α,β)$空间的Killing方程可分为两部分。一个方程与黎曼度量的Killing方程相同,另一个方程可以看作是一个约束。Killing方程的解明确地表现了Finsler空间的等距对称性。我们发现$(α,β)$空间的一种特殊情形的等距群与甚狭义相对论(VSR)的对称性相同。给出了Finsler-Funk空间的Killing向量。与黎曼常曲率空间不同,四维常曲率Funk空间只有6个独立的Killing向量。

英文摘要:

The Killing equation for a general Finsler space is set up. It is showed that the Killing equation of $(α,β)$ space can be divided into two parts. One is the same with Killing equation of a Riemannian metric, another equation can be regarded as a constraint. The solutions of Killing equations present explicitly the isometric symmetry of Finsler space. We find that the isometric group of a special case of $(α,β)$ space is the same with the symmetry of Very Special Relativity (VSR). The Killing vectors of Finsler-Funk space are given. Unlike Riemannian constant curvature space, the 4 dimensional Funk space with constant curvature just have 6 independent Killing vectors.

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