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Magnetic black universes and wormholes with a phantom scalar
S. V. Bolokhov, K. A. Bronnikov, M. V. Skvortsova
We construct explicit examples of globally regular static, spherically symmetric solutions in general relativity with scalar and electromagnetic fields which describe traversable w…
Instabilities of wormholes and regular black holes supported by a phantom scalar field
K. A. Bronnikov, R. A. Konoplya, A. Zhidenko
We test the stability of various wormholes and black holes supported by a scalar field with a negative kinetic term. The general axial perturbations and the monopole type of polar…
Multi-horizon spherically symmetric spacetimes with several scales of vacuum energy
Kirill Bronnikov, Irina Dymnikova, Evgeny Galaktionov
We present a family of spherically symmetric multi-horizon spacetimes with a vacuum dark fluid, associated with a time-dependent and spatially inhomogeneous cosmological term. The…