TIME VARIATION OF FINE STRUCTURE CONSTANT AND PROTON-ELECTRON MASS RATIO WITH QUINTESSENCE
2007 ◽
Vol 22
(25n28)
◽
pp. 2003-2011
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Keyword(s):
Recent 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.
Keyword(s):
2017 ◽
Vol 5
(2)
◽
pp. 46
◽
2014 ◽
Vol 11
(S308)
◽
pp. 628-630
2018 ◽
Vol 14
(3)
◽
pp. 5758-5764
◽
Keyword(s):
2009 ◽
Vol 5
(H15)
◽
pp. 317-317
Keyword(s):