# Symmetron with a non-minimal kinetic term

## TL;DR

This paper explores a modified Symmetron model with a non-minimal kinetic term, showing it can produce an accelerating universe phase compatible with dark energy despite a large scalar field mass.

## Contribution

It introduces a non-minimal kinetic term into the Symmetron model, demonstrating its potential to sustain cosmic acceleration compatible with dark energy.

## Key findings

- The non-minimal kinetic term enhances the friction in the Symmetron's equation of motion.
- Under certain conditions, the model predicts an accelerating universe lasting as long as the Hubble time.
- The model remains compatible with a large effective mass of the scalar field.

## Abstract

We investigate the compatibility of the Symmetron with dark energy by introducing a non-minimal kinetic term associated with the Symmetron. In this new model, the effect of the friction term appearing in the equation of motion of the Symmetron field becomes more pronounced due to the non-minimal kinetic term appearing in the action and, under specific conditions after symmetry breaking, the universe experiences an accelerating phase which, in spite of the large effective mass of the scalar field, lasts as long as the Hubble time $H_{0}$.