In the massless sector of hybrid metric-Palatini gravity, exact spherical vacuum solutions are generically singular or wormhole-like, with special extremal black holes and an infinite-horizon geometry.
Gravitational field of global monopoles in Einstein-Cartan gravity
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abstract
The gravitational weak field of a global monopole in the Einstein-Cartan theory of gravity is investigated.To obtain this solution we assume that Cartan torsion takes the form of the Newtonian gravitational potential.From the geodesics it is possible to show that the torsionic monopole produces a repulsive gravitational force.
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gr-qc 1years
2019 1verdicts
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Spherically symmetric black holes and wormholes in hybrid metric-Palatini gravity
In the massless sector of hybrid metric-Palatini gravity, exact spherical vacuum solutions are generically singular or wormhole-like, with special extremal black holes and an infinite-horizon geometry.