论文标题
使用强重力透镜和IA型超新星探测失控DILATON模型中的精细结构常数变化
Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae
论文作者
论文摘要
为了探测精细结构常数（$α$）的可能时间变化，我们提出了一种基于强力透镜和IA型超新星观测值的新方法。通过考虑一类Dilaton失控的模型，其中$ \ frac {Δα}α= - γ\ ln {（1+z）} $，我们在$ \ frac {Δα}α$上获得限制，$γ\γ\ gout 10^{ - 2} $（$γ$ capture capture the Phallucties the Models the Models ny Models n os n os the Mode n sum os n sum of Mode n sum os n sum of the Models n sun node she note）由于数据集涵盖了红移范围$ 0.075 \ leq z \ leq 2.2649 $，因此此处得出的约束在低，中间和高红移时可能会在可能的$α$上提供独立的界限。
In order to probe a possible time variation of the fine-structure constant ($α$), we propose a new method based on Strong Gravitational Lensing and Type Ia Supernovae observations. By considering a class of dilaton runaway models, where $\frac{Δα}α= - γ\ln{(1+z)}$, we obtain constraints on $\frac{Δα}α$ at the level $γ\approx 10^{-2}$ ($γ$ captures the physical properties of the model). Since the data set covers the redshift range $0.075 \leq z \leq 2.2649$, the constraints derived here provide independent bounds on a possible time variation of $α$ at low, intermediate and high redshifts.
