Domain walls on the surface of q-stars

TL;DR

This paper investigates the properties of domain-wall networks on q-star surfaces, providing numerical solutions that reveal how these networks influence the star's mass, radius, and scalar field characteristics.

Contribution

It introduces a comprehensive numerical analysis of domain-wall networks on q-stars, highlighting their impact on star properties in flat and anti-de Sitter spacetimes.

Findings

Mass, radius, and particle number increase with domain-wall networks.

Scalar field values decrease when domain-wall networks are present.

Numerical solutions cover the entire stable configuration phase space.

Abstract

We study domain-wall networks on the surface of q-stars in asymptotically flat or anti de Sitter spacetime. We provide numerical solutions for the whole phase space of the stable field configurations and find that the mass, radius and particle number of the star is larger but the scalar field, responsible for the formation of the soliton, acquires smaller values when a domain-wall network is entrapped on the star surface.