Cosmic Variation of Proton to Electron Mass Ratio with an interacting Higgs Scalar Field

Abstract

We discuss that it is quite possible to realize the smooth transition of the universe between a matter/radiation dominated deceleration and a dark energy dominated acceleration, even with a variation of proton-to-electron mass ratio. The variation is incorporated into the theory of gravity using a cosmological Higgs scalar field with a non-trivial self-interaction potential, leading to a varying Higgs vacuum expectation value (VEV). This matches well with the data from molecular absorption spectra of a series of Quasars. In comparison with late-time cosmology, an observational consistency is reached using a Markov chain Monte Carlo simulation and JLA+OHD+BAO data sets. We find that the pattern of variation is embedded within the evolving Equation of State (EOS) of the scalar Dark Energy/Matter components, but leaves negligible trace on the effective EOS of the system. We discuss three cases of scalar extended theory of gravity, (a) a minimally coupled scalar, (b) a non-minimally coupled scalar and (c) a generalized Brans-Dicke setup. We also give a toy model of a unified cosmic history from inflation to the present era and discuss how the Higg VEV might have changed as a function of look back time.

17 pages, 17 figures, accepted for publication in the Monthly Notices of the Royal Astronomical Society

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Cited by in corpus (3)

• The dynamics of vacuum, gravity and matter: Implications on the fundamental constants
• On Generalized Theories of Varying Fine Structure Constant
• A `Third' Quantization Constructed for Gauge Theory of Gravity