论文标题
对洛伦兹不变性侵犯的模型无关的约束：更新的伽玛射线爆发观察的影响
Model-independent constraints on Lorentz invariance violation: implication from updated Gamma-ray burst observations
论文作者
论文摘要
由于涉及的高能量和较长的距离，天体物理观察结果为测试Lorentz不变性违规（LIV）的可能签名提供了独特的机会。在量子重力理论中，人们可能会期望光子的能量和动量之间的分散关系修改，这可以通过伽马射线爆发（GRBS）的时间段（不同能带中的光曲线之间的到达时间延迟（在不同能带中的到达时间延迟）进行探测。在本文中，通过使用不同能频带的GRB 160625b的详细时间延迟测量以及23个时间延迟的GRB覆盖$ z = 0.168-2.5 $的红移范围（我们在光线上进行了不同的能量渠道测量的曲线），我们建议使用改进的模型依赖性的方法（基于模型依赖性的方法）（基于新的compert $ hem）（基于新型的样本$ hH）由于光子的修饰分散关系而引起的能量依赖性速度。在描述时间延迟的更复杂和合理的理论表达的框架中，我们的结果表明，可以通过更多的GRBS时间延迟数据更好地描述固有的时间滞后。更重要的是，通过直接拟合GRB样品的时间延迟测量值，我们对LIV能量量表的极限与固有时间滞后的恒定量相当，在线性LIV和二次LIV病例中均低于Planck能量量表。
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.
