# Einstein Yang-Mills Higgs dark energy revisited

## TL;DR

This paper revisits the Einstein Yang-Mills Higgs model for dark energy, emphasizing the role of gauge fixing and Higgs field dynamics in driving late-time cosmic acceleration, aligning with observations.

## Contribution

It highlights the importance of gauge fixing in the model and demonstrates how Higgs field dynamics can explain late-time acceleration, improving previous analyses.

## Key findings

- Higgs field can be driven away from its potential minimum.
- Gauge fixing is crucial for maintaining homogeneity and isotropy.
- Numerical solutions match current cosmological observations.

## Abstract

Inspired in the Standard Model of Elementary Particles, the Einstein Yang-Mills Higgs action with the Higgs field in the SU(2) representation was proposed in Class. Quantum Grav. 32 (2015) 045002 as the element responsible for the dark energy phenomenon. We revisit this action emphasizing in a very important aspect not sufficiently explored in the original work and that substantially changes its conclusions. This aspect is the role that the Yang-Mills Higgs interaction plays at fixing the gauge for the Higgs field, in order to sustain a homogeneous and isotropic background, and at driving the late accelerated expansion of the Universe by moving the Higgs field away of the minimum of its potential and holding it towards an asymptotic finite value. We analyse the dynamical behaviour of this system and supplement this analysis with a numerical solution whose initial conditions are in agreement with the current observed values for the density parameters. This scenario represents a step towards a successful merging of cosmology and well-tested particle physics phenomenology.