Disformal Transition of a Black Hole to a Wormhole in Scalar-Tensor Horndeski Theory
arXiv:2111.08773 · doi:10.1103/PhysRevD.105.064025
Abstract
We consider disformal transformations in a subclass of Horndeski theory in which a scalar field is kinetically coupled to the Einstein tensor. We apply a disformal transformation on a seed hairy black hole solution of this theory and we show that there is a transition of a black hole to a wormhole. We also show that the null energy condition is violated in the wormhole configuration and we study the stability of the wormhole solution by calculating the time evolution of scalar perturbations in this geometry.
14 pages, 15 figures, Citations added, More references added
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