Investigating the Lorentz invariance violation effect using different cosmological backgrounds

Investigating the Lorentz invariance violation effect using different cosmological backgrounds
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使用不同的宇宙学背景研究洛伦兹不变性破坏效应

DOI:
10.1088/1361-6382/ad1122
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发表时间:
2023
影响因子:
3.5
通讯作者:
Abdalla H
Abdalla H
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Abdalla H

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物理学中熟悉的概念,如洛伦兹对称性,预计将在接近普朗克能量标度的能量下被打破,正如几个量子引力理论所预测的那样。然而,如此巨大的能量是目前地球上的实验无法达到的。目前和未来的切伦科夫望远镜设施可能有能力测量洛伦兹对称性的累积变形,光子通过能量依赖的时间延迟进行长距离旅行。测试洛伦兹不变性破坏(LIV)特征的最佳自然实验室之一是伽马射线暴。由于LIV效应的时间延迟的计算依赖于宇宙膨胀的历史。在以往大多数计算LIV效应引起的时间滞后的工作中,都假设了标准的ΛCDM(或和谐)宇宙学模型。在本文中,我们调查是否LIV签名是显着不同时,假设替代的ΛCDM宇宙学模型。具体来说,我们考虑了具有非平凡暗能量状态方程(EoS)的宇宙学模型(
Familiar concepts in physics, such as Lorentz symmetry, are expected to be broken at energies approaching the Planck energy scale as predicted by several quantum-gravity theories. However, such very large energies are unreachable by current experiments on Earth. Current and future Cherenkov telescope facilities may have the capability to measure the accumulated deformation from Lorentz symmetry for photons traveling over large distances via energy-dependent time delays. One of the best natural laboratories to test Lorentz invariance violation (LIV) signatures are gamma-ray bursts. The calculation of time delays due to the LIV effect depends on the cosmic expansion history. In most of the previous works calculating time lags due to the LIV effect, the standard ΛCDM (or concordance) cosmological model is assumed. In this paper, we investigate whether the LIV signature is significantly different when assuming alternatives to the ΛCDM cosmological model. Specifically, we consider cosmological models with a non-trivial dark-energy equation of state (EoS)(
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