Time Variation of Fine Structure Constant and Proton-Electron Mass Ratio with Quintessence

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dc.creatorLee, Seokcheon
dc.date2007-02-02
dc.date.accessioned2026-07-07T10:36:50Z
dc.date.available2026-07-07T10:36:50Z
dc.descriptionRecent astrophysical observations of quasar absorption systems indicate that the fine structure constant $α$ and the proton-electron mass ratio $μ$ may have evolved through the history of the universe. Motivated by these observations, we consider the cosmological evolution of a quintessence-like scalar field $ϕ$ coupled to gauge fields and matter which leads to effective modifications of the coupling constants and particle masses over time. We show that a class of models where the scalar field potential $V(ϕ)$ and the couplings to matter $B(ϕ)$ admit common extremum in $ϕ$ naturally explains constraints on variations of both the fine structure constant and the proton-electron mass ratio.
dc.description9 pages, 4 figures, CosPA 2006 Proceeding. 9 pages, 4 figures, CosPA 2006 Proceeding will be published in the Mod. Phys. Lett. A
dc.identifierhttps://arxiv.org/abs/astro-ph/0702063
dc.identifierhttp://arxiv.org/abs/astro-ph/0702063
dc.identifierMod.Phys.Lett.A22:2003-2011,2007
dc.identifierdoi:10.1142/S0217732307025236
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180187
dc.subjectAstrophysics
dc.titleTime Variation of Fine Structure Constant and Proton-Electron Mass Ratio with Quintessence
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