We propose a novel cosmological scenario with the space–time emerging from a pure initial
de Sitter stage and subsequently evolving into the radiation, matter and dark energy …

Determining the mechanism behind the current cosmic acceleration constitutes a major
question nowadays in theoretical physics. If the dark energy route is taken, this problem may …

In this work we have used the recent cosmic chronometer data along with the latest
estimation of the local Hubble parameter value, H 0 at 2.4% precision as well as the …

After decades of successful hot big-bang paradigm, cosmology still lacks a framework in
which the early inflationary phase of the universe smoothly matches the radiation epoch and …

We propose a general class of interacting models in which the interaction between the cold
dark matter component and Λ is parametrized by an arbitrary function of the cosmic scale …

We consider modified theories of gravity with a direct coupling between matter and
geometry, denoted by an arbitrary function in terms of the Ricci scalar. Because of such a …

A component of dark energy has been recently proposed to explain the current acceleration
of the Universe. Unless some unknown symmetry in Nature prevents or suppresses it, such …

We consider a generalized Brans-Dicke model in which the scalar field has a potential
function and is also allowed to couple nonminimally with the matter sector. We assume a …

The correspondence between cosmological models powered by a decaying vacuum energy
density and gravitationally induced particle production is investigated. Although being …

Recent astronomical observations have indicated that the Universe is in a phase of
accelerated expansion. While there are many cosmological models which try to explain this …