EYM equations in the presence of q-stars

TL;DR

This paper investigates Einstein-Yang-Mills equations coupled with q-star configurations, producing stable numerical solutions and exploring their properties in different spacetime backgrounds, including anti-de Sitter space.

Contribution

It introduces numerical solutions for gravitating q-star configurations within Einstein-Yang-Mills theory, analyzing their stability and effects of field parameters, including in anti-de Sitter spacetime.

Findings

Stable solutions against gravitational collapse and fission.

Field strength and eigen-frequency influence soliton parameters.

Formation of soliton stars in anti-de Sitter spacetime.

Abstract

We study Einstein-Yang-Mills equations in the presence of gravitating non-topological soliton field configurations, of q-ball type. We produce numerical solutions, stable with respect to gravitational collapse and to fission into free particles, and we study the effect of the field strength and the eigen-frequency to the soliton parameters. We also investigate the formation of such soliton stars when the spacetime is asymptotically anti de Sitter.