Speed variations of cosmic photons and neutrinos from loop quantum gravity

被引：6
|
作者：
Li, Hao [1 ]
Ma, Bo-Qiang [1 ,2 ,3 ]
机构：
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[2] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
[3] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China
来源：
PHYSICS LETTERS B | 2023年 / 836卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.physletb.2022.137613
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently a series of analyses on the flight time of cosmic photons and neutrinos suggests that the speed of light in vacuo takes the energy-dependent form v(E)similar or equal to 1 -E/E-LIV(gamma) with E gamma LIV approximate to 3.6 x 10(17) GeV, and meanwhile the speed of neutrinos is proposed to be v(E) similar or equal to 1 +/- E/E nu LIV with E-LIV(nu) approximate to 6.5 x 10(17) GeV and +/- representing the helicity dependence. This novel picture immediately urges us to provide a satisfactory theoretical explanation. Among all the attempts to predict the speed variations from quantum gravity, we find that loop quantum gravity can serve as a good candidate for explaining the aforementioned picture consistently. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
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页数：5
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