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تسجيل مستخدم جديدPhantom fluid supporting traversable wormholes in alternative gravity with extra material terms
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Wormholes are tunnels connecting different regions in space-time. They were obtained originally as a solution for Einsteins General Relativity theory and according to this theory they need to be filled by an exotic kind of anisotropic matter. In the present sense, by exotic matter we mean matter that does not satisfy the energy conditions. In this article we propose the modelling of wormholes within an alternative gravity theory that proposes an extra material (rather than geometrical) term in its gravitational action. Our solutions are obtained from well-known particular cases of the wormhole metric potentials, named redshift and shape functions, and yield the wormholes to be filled by a phantom fluid, that is, a fluid with equation of state parameter $omega<-1$. In possession of the solutions for the wormhole material content, we also apply the energy conditions to them. The features of those are carefully discussed.
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A possible candidate for the late time accelerated expanding Universe is phantom energy, which possesses rather bizarre properties, such as the prediction of a Big Rip singularity and the violation of the null energy condition. The latter is a fundam
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