Abstract
We study the time variation of the fine structure constant driven by quintessential dark energy which is coupled to electromagnetism. By employing phenomenological quintessential models which provide the scalar field with maximal dynamics and satisfy the constraints from SNIa observations and the WMAP, we show that the fifth force experiments restrict the variation of the value of α at the decoupling epoch with respect to the present-day value from being less than about 0.1%.
Original language | English |
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Pages (from-to) | 1089-1092 |
Number of pages | 4 |
Journal | Modern Physics Letters A |
Volume | 19 |
Issue number | 13-16 |
DOIs | |
Publication status | Published - 2004 May 30 |
Externally published | Yes |
Keywords
- Darke energy
- Fine structure constant
- Quintessence
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Astronomy and Astrophysics
- General Physics and Astronomy