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

Abstract

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 ${\omega }_{\text{BD}},{\omega }_0\to \infty$ 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

arXiv comment17 pages, to appear in Phys. Rev. D

References in corpus (15)

• Gravitating Non-Abelian Solitons and Black Holes with Yang-Mills Fields
• Black Holes in Magnetic Monopoles
• Gravitating Monopole Solutions II
• Eluding the no-hair conjecture: Black holes in spontaneously broken gauge theories
• The Behaviour Of Cosmological Models With Varying-G
• Boson Stars in General Scalar-Tensor Gravitation: Equilibrium Configurations
• Brans-Dicke Boson Stars: Configurations and Stability through Cosmic History
• Generation of scalar-tensor gravity effects in equilibrium state boson stars
• Einstein-Yang-Mills Theory with a Massive Dilaton and Axion: String-Inspired Regular and Black Hole Solutions
• Boson Stars in the Brans-Dicke Gravitational Theories
• Charged Scalar-Tensor Boson Stars: Equilibrium, Stability and Evolution
• Q-stars and charged q-stars
• Dynamical evolution of boson stars in Brans-Dicke theory
• Q-stars in anti de Sitter spacetime
• EYM equations in the presence of q-stars