Electron mass variation from dark sector interactions and compatibility with cosmological observations

Abstract

We investigate the model where electrons and dark matter interact with dark energy through the rolling of a scalar field which comes from extra dimensional theories such as the braneworld theory and Brans-Dicke theory. In this model, dark energy couples to dark matter and electrons, which leads to larger values of the mass energies of dark matter and electrons in the early universe. We also fit our model to the cosmological data. By analyzing the data from Planck, baryon acoustic oscillation (BAO), light curves (Pantheon), and type-Ia supernovae (SH0ES), it can be seen that the Hubble tension is relieved in our model and the coupling parameter prefers a non-zero value with a significance of over 2σ.

18 pages, 7 figures, version published in Phys. Rev. D

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• Solar chameleons: Novel channels
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• Redshift-space distortion constraints on the neutrino mass and models to alleviate the Hubble tension
• Constraints on the varying electron mass and early dark energy in light of ACT DR6 and DESI DR2 and the implications for inflation