用天体物理观测的光子研究洛伦兹对称性破缺
Lorentz Symmetry breaking studies with photons from astrophysical observations
摘要：
洛伦兹不变性破坏（LIV）可能是研究量子引力物理的一个很好的观测窗口。在过去几年中，所有主要的伽马射线实验都公布了用各种天体物理学来源寻找LIV的结果：用卫星上的探测器寻找伽马射线暴，用地面实验寻找活动星系核。本文综述了近年来空间和地面观测中关于非偏振光子飞行时间的研究。文中介绍了在时延搜索中使用的各种方法，并讨论了它们的性能。由于没有显着的时间滞后值被发现在实验精度的测量，目前的结果包括95%的置信水平限制的量子引力尺度上的线性和二次项的标准光子色散关系。
英文摘要：
Lorentz Invariance Violation (LIV) may be a good observational window on Quantum Gravity physics. Within last few years, all major Gamma-ray experiments have published results from the search for LIV with variable astrophysical sources: gamma-ray bursts with detectors on-board satellites and Active Galactic Nuclei with ground-based experiments. In this paper, the recent time-of-flight studies with unpolarized photons published from the space and ground based observations are reviewed. Various methods used in the time delay searches are described, and their performance discussed. Since no significant time-lag value was found within experimental precision of the measurements, the present results consist of 95% confidence cevel limits on the Quantum Gravity scale on the linear and quadratic terms in the standard photon dispersion relations.
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