Bound on the time variation of the fine structure constant driven by quintessence

Da Shin Lee; Wolung Lee; N. G. Kin-Wang

doi:10.1142/S021827180500589X

Bound on the time variation of the fine structure constant driven by quintessence

Da Shin Lee^*, Wolung Lee, N. G. Kin-Wang

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The bound on the time variation of the fine structure constant (α) driven by the dynamics of quintessence scalar field which is coupled to electromagnetism is discussed using phenomenological quintessential models constrained by SNIa and CMS observations. We find that those models allowing early quintessence give the largest variation Δα at the decoupling epoch. Furthermore, the fifth force experiments imply that Δα/α is less than about 0.1%.

Original language	English
Pages (from-to)	335-343
Number of pages	9
Journal	International Journal of Modern Physics D
Volume	14
Issue number	2
DOIs	https://doi.org/10.1142/S021827180500589X
Publication status	Published - 2005 Feb

Keywords

Cosmic microwave background
Fine-structure constant
Quintessence

ASJC Scopus subject areas

Mathematical Physics
Astronomy and Astrophysics
Space and Planetary Science

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10.1142/S021827180500589X

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AB - The bound on the time variation of the fine structure constant (α) driven by the dynamics of quintessence scalar field which is coupled to electromagnetism is discussed using phenomenological quintessential models constrained by SNIa and CMS observations. We find that those models allowing early quintessence give the largest variation Δα at the decoupling epoch. Furthermore, the fifth force experiments imply that Δα/α is less than about 0.1%.

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Bound on the time variation of the fine structure constant driven by quintessence

Abstract

Keywords

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