EYM equations in the presence of q-stars is scalar-tensor gravitational theories

Details EYM equations in the presence of q-stars is scalar-tensor gravitational theories EYM equations in the presence of q-stars is scalar-tensor gravitational theories

2005-03-06

arxiv.org/abs/hep-th/0503049v3

Phys.Rev. D71 (2005) 064014

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.71.064014

We study Einstein-Yang-Mills equations in the presence of a gravitating non-topological soliton field configuration consisted of a Higgs doublet, in Brans-Dicke and general scalar-tensor gravitational theories. The results of General Relativity are reproduced in the $\omega_{\textrm{BD}},\omega_0\to\infty$ limit. The numerical solutions correspond to a soliton star with a non-abelian gauge field. We study the effects of the coupling constant, the frequency of the Higgs field and the Brans-Dicke field on the soliton parameters

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