Environmental dependence of masses and coupling constants

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193 Scopus citations


We construct a class of scalar field models coupled to matter that lead to the dependence of masses and coupling constants on the ambient matter density. Such models predict a deviation of couplings measured on the Earth from values determined in low-density astrophysical environments, but do not necessarily require the evolution of coupling constants with the redshift in the recent cosmological past. Additional laboratory and astrophysical tests of Δα and Δ(mp/me) as functions of the ambient matter density are warranted.

Original languageEnglish (US)
Article number043524
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number4
StatePublished - Feb 25 2008


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