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CONSTRAINTS ON THE LORENTZ INVARIANCE VIOLATION WITH GAMMA-RAY BURSTS VIA A MARKOV CHAIN MONTE CARLO APPROACH

机译:通过MARKOV链蒙特卡罗方法约束伽玛射线暴破坏洛伦兹不变性

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In the quantum theory of gravity, for photons we expect the Lorentz Invariance Violation (LIV) and the modification of the dispersion relation between energy and momentum. The effect of the energy-dependent velocity due to the modified dispersion relation for photons was studied in the standard cosmological context by using a sample of gamma-ray bursts (GRBs). In this paper we mainly discuss the possible LIV effect of using different cosmological models for the accelerating universe. Due to the degeneracies among model parameters, the GRBs' time delay data are combined with the cosmic microwave background data from the Planck first-year release, the baryon acoustic oscillation data at six different redshifts, and Union2 Type Ia supernovae data to constrain both the model parameters and the LIV effect. We find no evidence of the LIV.
机译:在引力的量子理论中,对于光子,我们期望发生洛伦兹不变性(LIV)以及能量和动量之间的色散关系的变化。在标准宇宙学背景下,通过使用伽马射线暴(GRB)样本研究了由于光子的色散关系被修改而导致的能量依赖速度的影响。在本文中,我们主要讨论使用不同宇宙学模型加速宇宙的可能的LIV效应。由于模型参数之间的简并性,GRBs的时延数据与普朗克第一年发布的宇宙微波背景数据,六种不同红移的重子声振荡数据以及Union2 Ia型超新星数据结合在一起,从而限制了模型参数和LIV效果。我们没有发现LIV的证据。

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