Disformal transition of a black hole to a wormhole in scalar-tensor Horndeski theory
Nikos Chatzifotis, Eleftherios Papantonopoulos, Christoforos Vlachos
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.
Topics & Concepts
WormholeScalar (mathematics)Energy conditionScalar fieldBlack hole (networking)PhysicsTensor (intrinsic definition)Theoretical physicsScalar–tensor theoryMathematical physicsClassical mechanicsGeometryGeneral relativityMathematicsComputer scienceRouting (electronic design automation)Link-state routing protocolComputer networkRouting protocolCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsPulsars and Gravitational Waves Research