Q-stars and charged q-stars

Details Q-stars and charged q-stars Q-stars and charged q-stars

2002-05-20

arxiv.org/abs/hep-th/0205197v1

Phys.Rev.D66:025023,2002

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 19pg, 12 figures. Accepted in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.66.025023

We present the formalism of q-stars with local or global U(1) symmetry. The equations we formulate are solved numerically and provide the main features of the soliton star. We study its behavior when the symmetry is local in contrast to the global case. A general result is that the soliton remains stable and does not decay into free particles and the electrostatic repulsion preserves it from gravitational collapse. We also investigate the case of a q-star with non-minimal energy-momentum tensor and find that the soliton is stable even in some cases of collapse when the coupling to gravity is absent.

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