Open AccessDynamical study of viscous modified Chaplygin gas and confrontation with recent observational data
Author(s) -
N. Mebarki,
D. Aberkane
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1258/1/012025
Subject(s) - chaplygin gas , loop quantum cosmology , physics , cosmology , hubble's law , singularity , big bounce , coincidence , classical mechanics , initial singularity , theoretical physics , dark energy , quantum , mathematical physics , quantum cosmology , universe , quantum mechanics , physical cosmology , de sitter universe , mathematical analysis , quantum gravity , mathematics , medicine , alternative medicine , pathology
A cosmological Model of viscous modified Chaplygin gas in classical and loop quantum cosmology (LQC) is proposed and a dynamical stability study is investigated. It is shown that the model is consistent with the recent observational data and gives good predictions for the deceleration and state parameters. The model can also predict the time crossing and gives a solution to the coincidence problem. Furthermore, in LQC background, the big bang singularity found in classical cosmology cease to exist and is replaced by a bounce when the Hubble parameter vanishes at the LQC critical energy density.