Abstract The Nobel Prize winning confirmation in 1998 of the accelerated expansion of our
Universe put into sharp focus the need of a consistent theoretical model to explain the origin …

We consider a gravitational theory in which matter is nonminimally coupled to geometry, with
the effective Lagrangian of the gravitational field being given by an arbitrary function of the …

We investigate the cosmological solutions of f (R, T) modified theories of gravity for a perfect
fluid in a spatially Friedmann-Lemaître-Robertson-Walker metric through the phase-space …

Solving field equations in the context of higher curvature gravity theories is a formidable
task. However, in many situations, eg, in the context of f (R) theories, the higher curvature …

Effective gravitational field equations on a four-dimensional brane embedded in a five-
dimensional bulk have been considered. Using the Einstein–Hilbert action along with the …

We analyze the dynamical system defined by a universe filled with a barotropic fluid plus a
scalar field with modified kinetic term of the form L= F (X)-V (ϕ). After a suitable choice of …

The continuum spectrum emitted by the accretion disk around quasars holds a wealth of
information regarding the strong gravitational field produced by the massive central object …

In this work we have investigated various properties of a spinning gyroscope in the context
of Horndeski theories. In particular, we have focused on two specific situations—(a) when …

In this article, we seek exact charged spherically symmetric black holes (BHs) with
considering f (R) gravitational theory. This BH is characterized by convolution and error …

Generally, the dynamics of test particles around galaxies, as well as the corresponding mass
deficit, is explained by postulating the existence of a hypothetical dark matter. In fact, the …