The interest in the sacred problem, clearly felt throughout the centuries, was caused by those socio-historical processes called social disasters, which raised the question of the very possibility of the existence of modern man. In the modern century, the process of destroying the fundamental foundations of traditional life, the growth of an ever-deeper feeling of losing a person’s ...

We propose a novel approach to parameterize the equation of state for Scalar Field Dark Energy (SFDE) and use it to derive analytical solutions for various cosmological parameters. Using statistical MCMC with Bayesian techniques, we obtain constraint values for the model parameters and analyze three observational datasets. We find a quintessence-like behavior for Dark Energy ...

In this paper, we analyze a simple class of Horndeski scalar-tensor theory. We investigate several cosmological solutions for inflation, bounce scenario and finite future-time singularities. Perturbations respect to Friedmann-Robertson-Walker metric are studied and discussed in the context of inflation.

In this article, we examined the Starobinsky gravity model in homogeneous and isotropic space-time described by the Friedman-Robertson-Walker metric. In the framework of this model, cosmological parameters were described that explain it in the early and late evolutionary times, such as the slow roll parameters, perturbation of curvature, scalar-tensor ratio, equation of state ...