Star-plus-wormhole systems with two interacting scalar fields

Джунушалиев Владимир Джумакадырович, Vladimir Folomeev, Ainur Urazalina

2015

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DOI 10.1142/s0218271815500972
Data confidence 70 medium
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Abstract

We study static, spherically symmetric mixed configurations with a nontrivial (wormhole) spacetime topology provided by the presence of two interacting ghost scalar fields. Wormhole is assumed to be filled by a perfect relativistic neutron fluid modeled by a polytropic equation of state. For such mixed configurations, we find regular, asymptotically flat general relativistic solutions. It is shown that the maximum of the fluid density is always shifted from the center and the resulting configurations represent, in general, double-throat systems.