Recently a lot of attention has been given to building a dark energy model in which the
equation-of-state parameter w can cross the phantom divide w=− 1. One of the models to …

This article examines the analytic solutions of isotropic spacetime with the minimal coupling
of scalar field and matter in the context of energy–momentum squared gravity. The scalar …

I study the possibility of constructing an observationally viable scenario where both early
inflation and the recently detected accelerated expansion of the universe can be explained …

The General Theory of Relativity: A Mathematical Exposition will serve readers as a modern
mathematical introduction to the general theory of relativity. Throughout the book, examples …

BOUNCING UNIVERSE WITH THE NON-MINIMALLY COUPLED SCALAR FIELD AND ITS
RECONSTRUCTION Page 1 September 29, 2009 9:59 WSPC/146-MPLA 03078 Modern …

In this paper, we investigate the effects of noncommutative phase-space on the quintom
cosmological model. In that case, we discuss about some cosmological parameters and …

This paper investigates the existence of Noether symmetries of isotropic universe model in f
(R, T) f(R,T) gravity admitting minimal coupling of matter and scalar fields. The scalar field …

The Special Relativity allows the possibility of a class of particles, known tachyons, that have
spacelike 4-velocities, ie, which move with velocity greater than speed of light in vacuum. In …

This thesis concentrates on the accelerated expansion of the Universe recently explored by
measurements of redshift and luminosity-distance relations of type Ia Supernovae. We have …

In this work a tachyonization of the ΛCDM model for a spatially flat Friedmann–Robertson–
Walker space–time is proposed. A tachyon field and a cosmological constant are considered …