We review different dark energy cosmologies. In particular, we present the Λ CDM
cosmology, Little Rip and Pseudo-Rip universes, the phantom and quintessence …

We review in detail a number of approaches that have been adopted to try and explain the
remarkable observation of our accelerating universe. In particular we discuss the arguments …

The recent determination of the local value of the Hubble constant by Riess et al., 2016
(hereafter R16) is now 3.3 sigma higher than the value derived from the most recent CMB …

This review summarizes recent attempts to reconstruct the expansion history of the universe
and to probe the nature of dark energy. Reconstruction methods can be broadly classified …

We report on a revision of our previous computation of the renormalized expectation value of
the stress-energy tensor of a massless, minimally coupled scalar with a quartic self …

In this work, I present exact cosmological solutions from Wesson's induced matter model
applied to a general 5D metric in f (R, T) f (R, T) theory of gravity. The non-conservation of …

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 …

Self-consistent N-body simulations of modified gravity models are a key ingredient to obtain
rigorous constraints on deviations from general relativity using large-scale structure …

We study the expansion history of the universe up to a redshift of z= 1.75 using the 194
recently published SnIa data by Tonry et al. and Barris et al. In particular we find the best fit …

We present a brief review on the Raychaudhuri equations. Beginning with a summary of the
essential features of the original article by Raychaudhuri and subsequent work of numerous …