FRW Cosmology with the Extended Chaplygin Gas


Pourhassan B., Kahya E. O.

ADVANCES IN HIGH ENERGY PHYSICS, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2014
  • Doi Number: 10.1155/2014/231452
  • Title of Journal : ADVANCES IN HIGH ENERGY PHYSICS

Abstract

We propose extended Chaplygin gas equation of state for which it recovers barotropic fluid with quadratic equation of state. We use numerical method to investigate the behavior of some cosmological parameters such as scale factor, Hubble expansion parameter, energy density, and deceleration parameter. We also discuss the resulting effective equation of state parameter. Using density perturbations we investigate the stability of the theory.