Mixed neutron-star-plus-wormhole systems: Rotating configurations
Dzhunushaliev V. Folomeev V. Kleihaus B. Kunz J.
15 February 2023American Physical Society
Physical Review D
2023#107Issue 4
We present rapidly rotating neutron stars featuring wormholes in their centers. They arise in general relativity in the presence of a ghost scalar field. The nuclear matter is described by a polytropic equation of state, yielding realistic masses and radii for the neutron stars. The wormholes possess small circumferential radii of size up to 3 km. With increasing wormhole size, the masses and radii of the stars decrease, while the domain of existence of these rotating mixed neutron-star-plus-wormhole systems retains the characteristic properties of a rotating neutron star domain. The question of stability of the mixed configurations under consideration is briefly discussed.
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Department of Theoretical and Nuclear Physics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Academician J. Jeenbaev Institute of Physics, NAS of the Kyrgyz Republic, 265 a, Chui Street, Bishkek, 720071, Kyrgyzstan
Institut für Physik, Universität Oldenburg, Postfach 2503, Oldenburg, D-26111, Germany
Laboratory for Theoretical Cosmology, International Centre of Gravity and Cosmos, Tomsk State University of Control Systems and Radioelectronics (TUSUR), Tomsk, 634050, Russian Federation
Department of Theoretical and Nuclear Physics
Institute of Experimental and Theoretical Physics
Academician J. Jeenbaev Institute of Physics
Institut für Physik
Laboratory for Theoretical Cosmology
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