Coloured Black Holes in Higher Curvature String Gravity

TL;DR

This paper demonstrates the existence of black hole solutions with non-trivial dilaton and Yang Mills hair in a higher curvature string gravity model, analyzing their properties both analytically and numerically.

Contribution

It provides the first numerical evidence of coloured black holes with hair in a 4D effective superstring gravity framework including Gauss-Bonnet corrections.

Findings

Existence of black hole solutions with non-trivial dilaton and Yang Mills hair.

Numerical demonstration of these solutions in SU(2) gauge fields.

Discussion of thermodynamical properties of the solutions.

Abstract

We consider the combined Yang Mills-Dilaton-Gravity system in the presence of a Gauss-Bonnet term as it appears in the $4D$ Effective Superstring Action. We give analytical arguments and demonstrate numerically the existence of black hole solutions with non-trivial dilaton and Yang Mills hair for the particular case of SU(2) gauge fields. The thermodynamical properties of the solutions are also discussed.