Compact boson stars in <Emphasis Type="Italic">K</Emphasis> field theories |
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Authors: | C Adam N Grandi P Klimas J Sánchez-Guillén and A Wereszczyński |
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Institution: | (1) Astronomy Centre, University of Sussex, BN1 9QJ Falmer, Brighton, UK |
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Abstract: | 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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Keywords: | |
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