We study the time-like geodesic congruences, in the space-time geometry of a
Schwarzschild black hole surrounded by quintessence. The nature of effective potential …

In this article, we propose metamaterials analog brane models based on the geometric
optics approach. We show how to model the Randall-Sundrum thin brane model and the …

We investigate the geodesic motion of massless test particles in the background of a
noncommutative geometry-inspired Schwarzschild black hole. The behavior of effective …

The many problems faced by the theory of general relativity (GR) have always motivated us
to explore the modified theory of GR. Considering the importance of studying the black hole …

We present a consistent derivation of the recently proposed 5D anisotropic standing wave
braneworld generated by gravity coupled to a phantom-like scalar field. We explicitly solve …

We study the time-like geodesics and geodesic deviation for a two-dimensional (2D) stringy
black hole (BH) spacetime in Schwarzschild gauge. We have analyzed the properties of …

We investigate the evolution of timelike geodesic congruences, in the background of a
charged black hole spacetime surrounded by quintessence. The Raychaudhuri equations …

We study a smooth cosmological solution within a generalized 5D standing wave
braneworld modeled by gravity and a phantom scalar field. In this model the 3-brane is …

We study the null geodesics of a four-dimensional magnetic charged black hole spacetime
arising in string theory. The behaviour of effective potential in view of the different values of …

We study the particle trajectories in the recently proposed five dimensional warped
(generalized) Ellis–Bronnikov spacetime (5D-WGEB)(which does not require exotic matter) …