Time variation of proton-electron mass ratio and fine structure constant with runaway dilaton

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dc.creatorChiba, Takeshi
dc.creatorKobayashi, Tatsuo
dc.creatorYamaguchi, Masahide
dc.creatorYokoyama, Jun'ichi
dc.date2006-10-02
dc.date2007-02-14
dc.date.accessioned2026-07-07T10:25:35Z
dc.date.available2026-07-07T10:25:35Z
dc.descriptionRecent astrophysical observations indicate that the proton-electron mass ratio and the fine structure constant have gone through nontrivial time evolution. We discuss their time variation in the context of a dilaton runaway scenario with gauge coupling unification at the string scale $M_{\rm s}$. We show that the choice of adjustable parameters allows them to fit the same order magnitude of both variations and their (opposite) signs in such a scenario.
dc.description16 pages, 1 figure, to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/0610027
dc.identifierhttp://arxiv.org/abs/hep-ph/0610027
dc.identifierPhys.Rev.D75:043516,2007
dc.identifierdoi:10.1103/PhysRevD.75.043516
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176587
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleTime variation of proton-electron mass ratio and fine structure constant with runaway dilaton
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