arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1404.7693astro-ph.COgr-qc
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无宇宙学常数的光速宇宙学中的SNe数据分析

SNe Data Analysis in Variable Speed of Light Cosmologies without Cosmological Constant

Peng-fei Zhang, Xin-he Meng

摘要:

在这项工作中,我们的目标是显示的可能性的变速光(VSL)理论在解释Ia型超新星观测不引入暗能量。光速被假设为与比例因子相关,这是VSL理论中最流行的假设。我们给出了距离模的修正计算,以及VSL理论中红移-标度因子关系的有效性。三种不同的模型VSL测试SNe数据集与适当的约束模型参数。比较了三种模型与平面$Λ$ CDM模型的距离系数。讨论了VSL理论的一些基本问题和验证的困难

英文摘要:

In this work, we aim to show the possibilities of the variable speed of light (VSL) theory in explaining the type Ia supernovae observations without introducing dark energy. The speed of light is assumed to be scale factor dependent, which is the most popular assumption in VSL theory. We show the modified calculation of the distance modulus, and the validity of the redshift-scale factor relation in VSL theory. Three different models of VSL are tested SNe data-sets with proper constraints on the model parameters. The comparison of the three models and flat $Λ$CDM in distance modulus is showed. Some basic problems and the difficulties of the confirmation of the VSL theory are also discussed

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