Constraining Lorentz invariance violation from the continuous spectra of short gamma-ray bursts

In some quantum gravity theories, a foamy structure of space-time may lead to Lorentz invariance violation（LIV）. As the most energetic explosions in the Universe, gamma-ray bursts（GRBs） provide an effect way to probe quantum gravity effects. In this paper, we use the continuous spectra of 20 short G...

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Published inChinese physics C Vol. 40; no. 4; pp. 43 - 48
Main Author 常哲 李昕 林海南 桑语 王平 王赛
Format Journal Article
LanguageEnglish
Published 01.04.2016
Subjects
Constraining
Continuous spectra
Energy use
Explosions
Gamma ray bursts
Invariance
Photons
Quantum gravity
γ射线暴
伽玛射线暴
低能量
卫星探测
引力效应
约束性
连续谱
量子引力理论
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ISSN1674-1137
0254-3052
2058-6132
DOI10.1088/1674-1137/40/4/045102

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Summary:In some quantum gravity theories, a foamy structure of space-time may lead to Lorentz invariance violation（LIV）. As the most energetic explosions in the Universe, gamma-ray bursts（GRBs） provide an effect way to probe quantum gravity effects. In this paper, we use the continuous spectra of 20 short GRBs detected by the Swift satellite to give a conservative lower limit of quantum gravity energy scale MQG. Due to the LIV effect, photons with different energy have different velocities. This will lead to the delayed arrival of high energy photons relative to low energy ones. Based on the fact that the LIV-induced time delay cannot be longer than the duration of a GRB,we present the most conservative estimate of the quantum gravity energy scales from 20 short GRBs. The strictest constraint, M_（QG） 〉 5.05 × 10~（14） GeV in the linearly corrected case, is from GRB 140622 A. Our constraint on MQG,although not as tight as previous results, is the safest and most reliable so far.
Bibliography:11-5641/O4
Zhe Chang, Xin Li, Hai-Nan Lin, Yu Sang, Ping Wang, Sai Wang（ 1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China ; 2 Department of Physics, Chongqing University, Chongqing 401331, China; 3 State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences Beijing 100190, China）
In some quantum gravity theories, a foamy structure of space-time may lead to Lorentz invariance violation（LIV）. As the most energetic explosions in the Universe, gamma-ray bursts（GRBs） provide an effect way to probe quantum gravity effects. In this paper, we use the continuous spectra of 20 short GRBs detected by the Swift satellite to give a conservative lower limit of quantum gravity energy scale MQG. Due to the LIV effect, photons with different energy have different velocities. This will lead to the delayed arrival of high energy photons relative to low energy ones. Based on the fact that the LIV-induced time delay cannot be longer than the duration of a GRB,we present the most conservative estimate of the quantum gravity energy scales from 20 short GRBs. The strictest constraint, M_（QG） 〉 5.05 × 10~（14） GeV in the linearly corrected case, is from GRB 140622 A. Our constraint on MQG,although not as tight as previous results, is the safest and most reliable so far.
Lorentz invariance violation gamma corrected conservative gravity constraint energetic tight
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ISSN:1674-1137
0254-3052
2058-6132
DOI:10.1088/1674-1137/40/4/045102