Singularities in any physical theory are either remarkable indicators of the unknown
underlying fundamental theory, or indicate a change in the description of the physical reality …

We systematically review some standard issues and also the latest developments of
modified gravity in cosmology, emphasizing on inflation, bouncing cosmology and late-time …

Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

We review inflationary cosmology in modified gravity such as R 2 gravity with its extensions
in order to generalize the Starobinsky inflation model. In particular, we explore inflation …

Teleparallel Gravity offers the possibility of reformulating gravity in terms of torsion by
exchanging the Levi-Civita connection with the Weitzenböck connection which describes …

From a hydrodynamicist's point of view the inclusion of viscosity concepts in the macroscopic
theory of the cosmic fluid would appear most natural, as an ideal fluid is after all an …

We study how a cosmological bounce, with a type IV singularity at the bouncing point, can
be generated by a classical vacuum F (G) gravity. We focus our investigation on the …

We investigate which Jordan frame F (R) gravity can describe a type IV singular bouncing
cosmological evolution, with special emphasis given near the point at which the type IV …

In this paper, we have shown the matter bounce scenario of the Universe in an extended
symmetric teleparallel gravity, the f (Q) gravity. Motivated from the bouncing scenario and …

In this work we consider a cosmological scenario in which the Universe contracts initially
having a bouncing-like behavior, and accordingly after it bounces off, it decelerates …