Compact boson stars in K field theories

Details Compact boson stars in K field theories Compact boson stars in K field theories

2009-08-03

arxiv.org/abs/0908.0218v2

Gen.Rel.Grav.42:2663-2701,2010

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 45 pages, 25 figures, some references and comments added

Scientific paper

10.1007/s10714-010-1006-4

We study a scalar field theory with a non-standard kinetic term minimally coupled to gravity. We establish the existence of compact boson stars, that is, static solutions with compact support of the full system with self-gravitation taken into account. Concretely, there exist two types of solutions, namely compact balls on the one hand, and compact shells on the other hand. The compact balls have a naked singularity at the center. The inner boundary of the compact shells is singular, as well, but it is, at the same time, a Killing horizon. These singular, compact shells therefore resemble black holes.

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