Spontaneous symmetry breaking in cosmos: The hybrid symmetron as a dark energy switching device

TL;DR

This paper explores the symmetron model's potential to induce late-time cosmic acceleration by switching between standard gravity and dark energy models like quintessence or $F(R)$ gravity after spontaneous symmetry breaking.

Contribution

It introduces a hybrid symmetron mechanism that activates dark energy models in low-density regions, addressing compatibility with local gravity constraints.

Findings

Symmetron model cannot directly serve as dark energy due to a no-go theorem.

The hybrid model successfully induces late-time acceleration.

Local gravity constraints are satisfied in the proposed scenario.

Abstract

We consider symmetron model in a generalized background with a hope to make it compatible with dark energy. We observe a "no go" theorem at least in case of a conformal coupling. Being convinced of symmetron incapability to be dark energy, we try to retain its role for spontaneous symmetry breaking and assign the role of dark energy either to standard quintessence or $F(R)$ theory which are switched on by symmetron field in the symmetry broken phase. The scenario reduces to standard Einstein gravity in the high density region. After the phase transition generated by symmetron field, either the $F(R)$ gravity or the standard quintessence are induced in the low density region. we demonstrate that local gravity constraints and other requirements are satisfied although the model could generate the late-time acceleration of Universe.