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 consider f (Q) extended symmetric teleparallel cosmologies, where Q is the non-metricity
scalar, and constrain its functional form through the order reduction method. By using this …

We investigate a bounce realization in the framework of higher order curvature in f (R, T)
modified theory of gravity. We perform a detailed analysis of the cosmological parameters to …

Lovelock gravity in D-dimensional space-times is considered adopting Cartan's structure
equations. In this context, we find out exact solutions in cosmological and spherically …

Non-local gravity cosmologies are considered under the standard of Noether symmetry
approach. In particular, we focus on non-local theories whose gravitational actions depend …

A bouncing universe is a viable candidate to solve the initial singularity problem. Here we
consider bouncing solutions in the context of f (R, G) gravity by using an order reduction …

One of the most crucial areas of gravity research, after the direct observation of gravitational
waves, is the possible modification of general relativity at ultraviolet and infrared scales. In …

The modified field equations are written in logarithmic and power law versions of entropy
corrected models in Einstein's gravity in the background of FRW universe. In one section, a …

Loop quantum cosmology (LQC) is a theory which renders the Big Bang initial singularity
into a quantum bounce, by means of short-range repulsive quantum effects at the Planck …

General Relativity is known to suffer from singularities at short distances, which indicates the
breakdown of its predictability, for instance at the center of black holes, and in the very early …