Lorentz不变性破坏的模型无关约束：来自更新的伽马射线暴观测的含义
Model-independent constraints on Lorentz invariance violation: implication from updated Gamma-ray burst observations
摘要：
由于涉及高能量和长距离，天体物理观测提供了一个独特的机会来测试洛伦兹不变性违反（LIV）的可能特征。在量子引力理论中，人们可以期待光子能量和动量之间的色散关系的修正，这可以用伽马射线暴（GRB）的时滞（不同能带的光变曲线之间的到达时间延迟）来探测。本文通过对GRB 160625 B不同能带的详细时延测量，以及对$z=0.168-2.5$红移范围内的23个时延GRB的详细测量，（其在来自光变曲线的不同能量通道处测量），提出了一种改进的模型无关方法（基于新编译的$H(z)$测量样本）来探测由于光子的修改的色散关系而导致的能量依赖的速度。在一个更复杂和合理的理论表达式来描述时间延迟的框架下，我们的结果意味着，更多的伽玛暴时间延迟数据可以更好地描述本征时间滞后。更重要的是，通过直接拟合的时间延迟测量的样品的伽玛暴，我们的限制的LIV能量标度是可比的，与未知常数的内在时间滞后，远低于普朗克能量标度在线性LIV和二次LIV的情况下。
英文摘要：
Astrophysical observations provide a unique opportunity to test possible signatures of Lorentz Invariance Violation (LIV), due to the high energies and long distances involved. In quantum theory of gravity, one may expect the modification of the dispersion relation between energy and momentum for photons, which can be probed with the time-lag (the arrival time delay between light curves in different energy bands) of Gamma-ray bursts (GRBs). In this paper, by using the detailed time-delay measurements of GRB 160625B at different energy bands, as well as 23 time-delay GRBs covering the redshifts range of $z=0.168-2.5$ (which were measured at different energy channels from the light curves), we propose an improved model-independent method (based on the newly-compiled sample of $H(z)$ measurements) to probe the energy-dependent velocity due to the modified dispersion relation for photons. In the framework of a more complex and reasonable theoretical expression to describe the time delays, our results imply that the intrinsic time lags can be better described with more GRBs time delay data. More importantly, through direct fitting of the time-delay measurements of a sample of GRBs, our limit on the LIV energy scale is comparable to that with unknown constant for the intrinsic time lag, much lower than the Planck energy scale in both linear LIV and quadratic LIV cases.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
