Cosmological evolution of fundamental constants: from theory to experiment

Calmet, Xavier and Keller, Matthias (2015) Cosmological evolution of fundamental constants: from theory to experiment. Modern Physics Letters A, 30 (22). ISSN 0217-7323

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Abstract

In this paper, we discuss a possible cosmological time evolution of fundamental constants from the theoretical and experimental point of views. On the theoretical side, we explain that such a cosmological time evolution is actually something very natural which can be described by mechanisms similar to those used to explain cosmic inflation. We then discuss implications for grand unified theories, showing that the unification condition of the gauge coupling could evolve with cosmological time. Measurements of the electron-to-proton mass ratio can test grand unified theories using low energy data. Following the theoretical discussion, we review the current status of precision measurements of fundamental constants and their potential cosmological time dependence.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Matthias Keller
Date Deposited: 10 Nov 2015 13:38
Last Modified: 10 Nov 2015 13:38
URI: http://sro.sussex.ac.uk/id/eprint/57831
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