We review spherical and inhomogeneous analytic solutions of the field equations of Einstein
and of scalar–tensor gravity, including Brans–Dicke theory, non-minimally (possibly …

For various reasons, a number of authors have mooted an “exponential form” for the
spacetime metric ds 2=-e-2 m/rdt 2+ e+ 2 m/r {dr 2+ r 2 (d θ 2+ sin 2 θ d ϕ 2)}. While the …

In this work, we investigated the motion of spinning test particles around a rotating
wormhole, extending, in this way, the previous work of Benavides-Gallego et al.[Phys. Rev …

We investigate a class of three parameter metrics that contain both the γ-metric and Janis-
Newman-Winicour (JNW) metric at special values of the parameters. To see the effect of the …

The motion of photons, neutral and charged particles around wormhole described by
exponential metric which is the solution of the Einstein-scalar field equations has been …

In the present paper we have investigated the strong gravitational lensing phenomena in the
exponential spacetime contributed by Papapetrou (1954 [1, 2, 3]). The lensing coefficients …

In this paper we have examined the validity of some proposed definitions of gravitational
entropy (GE) in the context of traversable wormhole solutions of the Einstein field equations …

The Newman–Janis (NJ) algorithm is the standard approach to rotation in general relativity
which, in vacuum, builds the Kerr metric from the Schwarzschild spacetime. Recently, we …

A new method is proposed, that establishes a one to one correspondance between the
whole set of static axially symmetric vacuum general relativity solutions and a specific class …

We present a new family of vacuum axially symmetric static solutions to Einstein's field
equations. This solution is a geometrically modified version of the Yilmaz exponential metric …