Boson stars in SU(2) Yang-Mills-scalar field theories
Yves Brihaye (Universite de Mons, Belgium), Betti Hartmann (IUB,, Germany), Eugen Radu (NUIM, Ireland)
TL;DR
This paper constructs and analyzes new spherically symmetric solutions in an SU(2) Einstein-Yang-Mills-scalar field theory, revealing configurations similar to boson stars through numerical methods.
Contribution
It introduces novel spherically symmetric solutions involving scalar and gauge fields in SU(2) Einstein-Yang-Mills theory, expanding the understanding of boson star-like objects.
Findings
Existence of asymptotically flat, Yang-Mills-boson star-type solutions.
Solutions include both nodeless and nodal configurations.
Shared features with pure boson stars.
Abstract
We present new spherically symmetric solutions of an SU(2) Einstein-Yang-Mills model coupled to a doublet of scalar fields. Sequences of asymptotically flat, Yang-Mills-boson star-type configurations are constructed numerically by considering an appropriate time-dependent ansatz for the complex scalar field and a static, purely magnetic SU(2)-Yang-Mills potential. Both nodeless as well as solutions with nodes of the scalar field and gauge potential are considered. We find that these solutions share many features with the "pure'' boson stars.
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