# New Exact Solutions for a Chiral Cosmological Model in 5D EGB Gravity

## TL;DR

This paper derives new exact solutions for a two-field chiral cosmological model within 5D Einstein-Gauss-Bonnet gravity, highlighting the role of field decomposition in solving complex equations.

## Contribution

It introduces a novel decomposition method that separates Einstein and Gauss-Bonnet contributions, enabling the derivation of exact solutions in a 5D chiral cosmological setting.

## Key findings

- Found new exact solutions with and without kinetic interaction.
- Demonstrated the decomposition approach simplifies complex field equations.
- Enhanced understanding of chiral cosmology in higher-dimensional gravity.

## Abstract

We consider a chiral cosmological model in the framework of Einstein-Gauss-Bonnet cosmology. Using a decomposition of the latter equations in such a way that the first chiral field is responsible for the Einstein part of the model, while the second field together with the kinetic interaction is connected with the Gauss--Bonnet part of the theory, we find new exact solutions for the 2-component chiral cosmological model with and without the kinetic interaction between fields.