洛伦兹不变性是物理学中的基本对称性原理之一,但一些量子引力理论指出洛伦兹对称性可能会在高能阶段被打破从而产生洛伦兹破缺现象,使光子的传播速度与其自身能量相关而非恒定光速.目前在唯象学模型下可以利用高能探测器对γ射线中光子的时间延迟和谱延迟进行洛伦兹破缺能标限制.基于唯象学模型,通过比对伽马暴中两种延迟的限制结果,发现谱延迟限制普遍小于时间延迟限制3～4个量级.为了使结果更具置信度,计算了 GRB 190114C在1～14s时间段的时间延迟限制和同时间段的谱延迟限制,比对结果仍是谱延迟限制小3个量级,这主要是谱延迟的特性所致.
Study of Lorentz violation limit based on phenomenological model
Lorentz invariance is one of the fundamental symmetries in physics.However,some theories of quantum gravity proposed that Lorentz symmetry might be broken at high energy stages,resulting in lorentz violation,which allows photons to propagate with a speed related to their own energy rather than a constant speed of light.Currently this violation theory is based on an image-only model utilizing time delays or spectral delays of photons in y-rays by high-energy detectors to place limits on the lorentz violation energy scale.Based on the image-only model,by comparing the limiting results of the two de-lays in gamma bursts,we find that the limiting results of the spectral delay are generally smaller than those of the temporal delay by 3～4 orders of magnitude.In order to make the results more confident,we also calculate the time-delay limiting re-sults for GRB 190114C in the 1～14 s time period.Compared with the spectral delay results for the same time period,the delays are still 3 orders of magnitude different,which may be generated due to the properties of the spectral delays.
国家科技期刊平台
NSTL
万方数据
