One-loop correction to the photon velocity in Lorentz-violating QED

被引：9
|
作者：
Satunin, Petr [1 ]
机构：
[1] Russian Acad Sci, Inst Nucl Res, 60th October Anniversary Prospect,7a, Moscow 117312, Russia
来源：
PHYSICAL REVIEW D | 2018年 / 97卷 / 12期
基金：
俄罗斯科学基金会;
关键词：
ENERGY; INVARIANCE; LIMITS;
D O I：
10.1103/PhysRevD.97.125016
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We calculate a finite momentum-dependent part of the photon polarization operator in a simple model of Lorentz-violating quantum electrodynamics nonperturbatively at all orders of Lorentz-violating parameters. We sum one-particle reducible diagrams into the modified photon propagator and determine the physical photon dispersion relation as the location of its pole. The photon dispersion relation, as well as its group velocity, acquires the one-loop momentum-dependent radiative correction. We constrain the Lorentz-violating parameters for heavy charged fermions (muon, tau lepton, and top quark) from the photon timing observations.
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页数：8
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