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arXiv · 2210.04425

Mixed neutron-star-plus-wormhole systems: Rotating configurations

Vladimir Dzhunushaliev·Vladimir Folomeev·Burkhard Kleihaus·Jutta Kunz
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Abstract

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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Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus, Jutta Kunz. 2022-10-10. Mixed neutron-star-plus-wormhole systems: Rotating configurations. https://doi.org/10.1103/physrevd.107.044060

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