论文标题
使用强烈的重力透镜和IA型超新星观测来限制光速的可能时间变化以及精细结构常数
Constraining a possible time-variation of the speed of light along with the fine-structure constant using strong gravitational lensing and Type Ia supernovae observations
论文作者
论文摘要
自从迪拉克（Dirac）提出了大数字假设以来，自然基本常数的可能时间变化一直是研究的积极主题。在本文中，我们提出了一种新方法，以研究光速（$ c $）的可能时间变化，并使用强烈的重力透镜（SGL）和IA型超新星（SNE IA）观察结果，并使用精细结构常数（$α$）。我们假设一种一般方法来描述镜头型星系的质量分布，这是一个有利于幂律指数模型（PLAW）的方法。我们还考虑了失控的Dilaton模型来描述$α$的可能时间变化。为了深入探索结果，根据镜头恒星速度分散和三个子样本，我们根据镜头红移将SGL样品分成五个子样本。结果表明，分别处理系统是合理的，但是找不到$ c $不同的强烈迹象。
The possible time variation of the fundamental constants of nature has been an active subject of research since the large-number hypothesis was proposed by Dirac. In this paper, we propose a new method to investigate a possible time variation of the speed of light ($c$) along with the fine-structure constant ($α$) using Strong Gravitational Lensing (SGL) and Type Ia Supernovae (SNe Ia) observations. We assume a general approach to describe the mass distribution of lens-type galaxies, the one in favor of the power-law index model (PLAW). We also consider the runaway dilaton model to describe a possible time-variation of $α$. In order to explore the results deeply, we split the SGL sample into five sub-samples according to the lens stellar velocity dispersion and three sub-samples according to lens redshift. The results suggest that it is reasonable to treat the systems separately, but no strong indication of varying $c$ was found.
