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

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)335-343
Number of pages9
JournalInternational Journal of Modern Physics D
Volume14
Issue number2
DOIs
Publication statusPublished - 2005 Feb 1

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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