It has been suggested that a possible candidate for the present accelerated expansion of the
Universe is “phantom energy”. The latter possesses an equation of state of the form ω≡ p/ρ< …

The need for energy and environmental sustainability as a result of the significant concern
for mitigating the effects of climate changes has notedly encouraged the deployment of more …

First, the ideas introduced in the wormhole research field since the work of Morris and
Thorne are reviewed, namely, the issues of energy conditions, wormhole construction …

We explore the shadow of a certain class of rotating traversable wormholes within classical
general relativity. The images depend on the angular momentum of the wormhole and the …

In this paper, we explore the quantum system of non-relativistic particles in a unique
scenario: a circularly symmetric and static three-dimensional wormhole space-time …

The different definitions for the equation of state of a nonminimally coupled scalar field that
have been introduced in the literature are analyzed. Particular emphasis is made upon …

This work is devoted to the study of wormhole solutions in the framework of gravitational
decoupling by means of the minimal geometric deformation scheme. As an example, to …

We provide an in depth study of the theoretical peculiarities that arise in effective negative
mass lensing, both for the case of a point mass lens and source, and for extended source …

The General Theory of Relativity has been an extremely successful theory, with a well
established experimental footing, at least for weak gravitational fields. Its predictions range …

We consider wormhole geometries subject to a gravitational action consisting of nonlinear
powers of the Ricci scalar. Specifically, wormhole throats are studied in the case where …