Abstract Models where dark matter and dark energy interact with each other have been
proposed to solve the coincidence problem. We review the motivations underlying the need …

In this review we present a thoroughly comprehensive survey of recent work on modified
theories of gravity and their cosmological consequences. Amongst other things, we cover …

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 …

The classical generalization of general relativity is considered as the gravitational alternative
for a unified description of the early-time inflation with late-time cosmic acceleration. The …

Over the past decade, f (R) theories have been extensively studied as one of the simplest
modifications to General Relativity. In this article we review various applications of f (R) …

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We review the recent progress for modified gravity models of dark energy–including f (R)
gravity, scalar-tensor theories, and braneworld models. In f (R) gravity, where the …

In the context of f (R, T) theories of gravity, we study the evolution of scalar cosmological
perturbations in the metric formalism. According to restrictions on the background evolution …

We investigate the cosmological predictions of several f (T) models, with up to two
parameters, at both the background and the perturbation levels. Using current cosmological …

Since the discovery of the accelerated expansion of the present universe, significant
theoretical developments have been made in the area of modified gravity. In the meantime …