We consider the equations of motion of an anisotropic space-time in f (T) theory, where T is
the torsion. New spherically symmetric solutions of black holes and wormholes are obtained …

An unambiguous definition of gravitational energy remains one of the unresolved issues of
physics today. This problem is related to the non-localization of gravitational energy density …

We derive the gravitational energy–momentum pseudotensor τ λ σ in metric f (R) gravity and
in teleparallel f (T) gravity. In the first case, R is the Ricci curvature scalar for a torsionless …

We give three different spherically symmetric spacetimes for the coupled gravitational and
electromagnetic fields with charged source in the tetrad theory of gravitation. One of these …

We study the energy and momentum of an isolated system in the tetrad theory of gravitation,
starting from the most general Lagrangian quadratic in torsion, which involves four unknown …

We give two classes of spherically symmetric exact solutions of the coupled gravitational
and electromagnetic fields with charged source in the tetrad theory of gravitation. The first …

We study the teleparallel equivalent of general relativity (TEGR) with Lagrangian that
includes the flat (inertial) spin connection and that is evidently invariant with respect to local …

In General Relativity, the issue of defining the gravitational energy contained in a given
spatial region is still unresolved, except for particular cases of localized objects where the …

We study the problem of whether the active gravitational mass of an isolated system is equal
to the total energy in the tetrad theory of gravitation. The superpotential is derived using the …

I find the most general spherically symmetric nonsingular black hole solution in a special
class of teleparallel theory of gravitation. If r is large enough, the general solution coincides …