MG14 - Talk detail |
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Participant |
Calmet, Xavier | |||||||
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Institution |
University of Sussex - Falmer - Brighton - East Sussex - United Kingdom | |||||||
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Session |
PT4 |
Accepted |
No |
Order |
Time |
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Talk |
Oral abstract |
Title |
Cosmological time evolution of physical constants | |||||
| Coauthors | Matthias Keller | |||||||
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Abstract |
In this talk I discuss a possible cosmological time evolution of fundamental constants from the theoretical and experimental point of views. On the theoretical side, I 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. I 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, I review the current status of precision measurements of fundamental constants and their potential cosmological time dependence. |
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Pdf file |
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