Constraints on spacetime anisotropy and Lorentz violation from the GRAAL experiment

Constraints on spacetime anisotropy and Lorentz violation from the GRAAL experiment
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GRAAL 实验对时空各向异性和洛伦兹破坏的约束

DOI:
10.1140/epjc/s10052-013-2337-6
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发表时间:
2013-02
影响因子:
4.4
通讯作者:
Wang, Sai
Wang, Sai
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Chang, Zhe;Wang, Sai

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GRAAL实验可以限制光速的变化。光速的各向异性可能意味着时空是各向异性的。Finsler几何是处理时空各向异性的一个合理的选择。本文研究了局域闵可夫斯基时空中光子扇区的洛伦兹不变性破坏。局部闵可夫斯基时空是一类平坦的芬斯勒时空,它指的是偏离闵可夫斯基时空的各向异性度规。用于拟合实验数据的LIV矩阵以这些度量偏差表示。GRAAL实验将时空各向异性限制在小于10−14。此外,我们发现,最简单的芬斯勒光子扇区可以被看作是一个几何表示的光子扇区的最小标准模型扩展(SME)。
The GRAAL experiment could constrain the variations of the speed of light. The anisotropy of the speed of light may imply that the spacetime is anisotropic. Finsler geometry is a reasonable candidate to deal with the spacetime anisotropy. In this paper, the Lorentz invariance violation (LIV) of the photon sector is investigated in the locally Minkowski spacetime. The locally Minkowski spacetime is a class of flat Finsler spacetime and refers a metric with the anisotropic departure from the Minkowski one. The LIV matrices used to fit the experimental data are represented in terms of these metric deviations. The GRAAL experiment constrains the spacetime anisotropy to be less than 10−14. In addition, we find that the simplest Finslerian photon sector could be viewed as a geometric representation of the photon sector in the minimal standard model extension (SME).
芬斯勒狭义相对论中没有类切伦科夫过程的中微子超光速
DOI: 10.1016/j.physletb.2012.03.002
发表时间: 2012-03
期刊: Physics Letters B
影响因子: 4.4
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