Time variation of the electron mass in the early universe and the Barrow-Magueijo model

Abstract

We put limits on the time variation of the electron mass in the early universe using observational primordial abundances of D, He4 and Li7, recent data from the Cosmic Microwave Background and the 2dFGRS power spectrum. Furthermore, we use these constraints together with other astronomical and geophysical bounds from the late universe to test Barrow-Magueijo's model for the variation in m_e. From our analysis we obtain -0.615 < Gω/c^4 < -0.045 (3σinterval) in disagreement with the result obtained in the original paper.

Accepted for publication in ApJ

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Cited by in corpus (4)

• Early Universe Constraints on Time Variation of Fundamental Constants
• Limits on a Gravitational Field Dependence of the Proton--Electron Mass Ratio from H${}_2$ in White Dwarf Stars
• Big Bang Nucleosynthesis constraints on varying electron mass solution to the Hubble tension
• Redshifting of cosmological black bodies in BSBM varying-alpha theories