Environment dependent electron mass and the Hubble constant tension

Rance Solomon; Garvita Agarwal; Dejan Stojkovic

doi:10.1103/PhysRevD.105.103536

Environment dependent electron mass and the Hubble constant tension

Rance Solomon
, Garvita Agarwal
, Dejan Stojkovic

Physics

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A difference in the electron mass at recombination from today's measured value has been shown to relieve the Hubble constant tension. In this article we propose a simple mechanism that would allow for such a mass difference. Similar in form to the Higgs field, we consider a Yukawa coupling between the symmetron scalar field and the electron. However, the symmetron's vacuum expectation value depends on its environment's matter density which, in principle, would allow its contribution towards the electron mass to differ between recombination and today. We detail the coupling and discuss possible observables.

Original language	English
Article number	103536
Journal	Physical Review D
Volume	105
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevD.105.103536
State	Published - May 15 2022

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N2 - A difference in the electron mass at recombination from today's measured value has been shown to relieve the Hubble constant tension. In this article we propose a simple mechanism that would allow for such a mass difference. Similar in form to the Higgs field, we consider a Yukawa coupling between the symmetron scalar field and the electron. However, the symmetron's vacuum expectation value depends on its environment's matter density which, in principle, would allow its contribution towards the electron mass to differ between recombination and today. We detail the coupling and discuss possible observables.

AB - A difference in the electron mass at recombination from today's measured value has been shown to relieve the Hubble constant tension. In this article we propose a simple mechanism that would allow for such a mass difference. Similar in form to the Higgs field, we consider a Yukawa coupling between the symmetron scalar field and the electron. However, the symmetron's vacuum expectation value depends on its environment's matter density which, in principle, would allow its contribution towards the electron mass to differ between recombination and today. We detail the coupling and discuss possible observables.

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Environment dependent electron mass and the Hubble constant tension

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