مشخصات پژوهش

Static solutions representing wormhole configurations in Einstein-Cartan theory (ECT) in the presence of electric charge are obtained. The solutions are described by a constant redshift function with matter content consisting of a Weyssenhoff fluid along with an anisotropic matter and energy momentum tensor (EMT) of the electric field which together generalize the anisotropic energy momentum tensor in Einstein-Maxwell theory in order to include the effects of the intrinsic angular momentum (spin) of the particles. Assuming the equation of state (EoS) pr=w1ρ and pt=w2ρ, we derive exact wormhole solutions satisfying weak and null energy conditions. Depending on the value of the spin square density at the wormhole throat, these solutions can be asymptotically flat, de Sitter, or anti–de Sitter. Observational aspects of the wormhole solutions are also studied, using gravitational lensing effects. It is found that the throat can act as a photon sphere near which the light deflection angle as arbitrarily large values. Moreover, for a particular class of solutions, when w1→-w2, the lensing features of the present model mimic those of the Ellis wormhole in the weak field limit.