Mixed neutron-star-plus-wormhole systems: Linear stability analysis

Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus, and Jutta Kunz
Phys. Rev. D 87, 104036 – Published 28 May 2013
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Abstract

We consider configurations consisting of a neutron star with a wormhole at the core. The wormhole is held open by a ghost scalar field with a quartic coupling. The neutron matter is described by a perfect fluid with a polytropic equation of state. We obtain static regular solutions for these systems. A stability analysis, however, shows that they are unstable with respect to linear perturbations.

  • Received 27 February 2013

DOI:https://doi.org/10.1103/PhysRevD.87.104036

© 2013 American Physical Society

Authors & Affiliations

Vladimir Dzhunushaliev1,2,3,4,*, Vladimir Folomeev3,4,†, Burkhard Kleihaus4,‡, and Jutta Kunz4,§

  • 1Department of Theoretical and Nuclear Physics, Kazakh National University, Almaty 050040, Kazhakhstan
  • 2Institute for Basic Research, Eurasian National University, Astana 010008, Kazhakhstan
  • 3Institute of Physicotechnical Problems and Material Science of the NAS of the Kyrgyz Republic, 265 a, Chui Street, Bishkek 720071, Kyrgyzstan
  • 4Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg, Germany

  • *v.dzhunushaliev@gmail.com
  • †vfolomeev@mail.ru
  • ‡b.kleihaus@uni-oldenburg.de
  • §jutta.kunz@uni-oldenburg.de

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Issue

Vol. 87, Iss. 10 — 15 May 2013

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