arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1504.02676gr-qcastro-ph.CO
收藏

爱因斯坦等效原理破缺的一些宇宙学后果

Some cosmological consequences of a breaking of the Einstein equivalence principle

A. Hees, O. Minazzoli, J. Larena

摘要:

在这篇文章中,我们考虑了广义相对论的一系列扩展,它们通过在标量场和电磁拉格朗日量之间引入乘法耦合来明确地打破爱因斯坦等效原理。在这些理论中,我们发现4个宇宙学观测量是密切相关的:时间变化的精细结构常数,违反距离对偶关系,宇宙微波背景(CMB)温度的演变和CMB光谱畸变。这使人们能够把非常严格的限制可能违反的距离对偶关系,对CMB温度的演变和容许CMB光谱失真使用当前的精细结构常数的约束。或者,这提供了有趣的可能性,通过同时分析多个数据集来测试各种引力理论。

英文摘要:

In this communication, we consider a wide class of extensions to General Relativity that break explicitly the Einstein Equivalence Principle by introducing a multiplicative coupling between a scalar field and the electromagnetic Lagrangian. In these theories, we show that 4 cosmological observables are intimately related to each other: a temporal variation of the fine structure constant, a violation of the distance-duality relation, the evolution of the cosmic microwave background (CMB) temperature and CMB spectral distortions. This enables one to put very stringent constraints on possible violations of the distance-duality relation, on the evolution of the CMB temperature and on admissible CMB spectral distortions using current constraints on the fine structure constant. Alternatively, this offers interesting possibilities to test a wide range of theories of gravity by analyzing several data sets concurrently.

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。

↑