Qualitative behaviour of gravitational perturbations in Chaplygin Gas - Unifying Dark Matter and Dark Energy

Two unified models of dark matter (DM) and dark energy (DE) are analysed, namely the Generalized Chaplygin Gas and the Modified Chaplygin Gas models. We study the qualitative behaviour of gravitational perturbations in both models, analysing their dynamical systems which describe the linear density...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2019-07, Vol.1269 (1), p.12016
Main Authors: Zaidi, Abdeldjalil, de Carvalho, J.P.M., Fernandes, R.A.A.
Format: Article
Language:English
Subjects:
Chaplygin gas
Dark energy
Dark matter
Perturbation
Physics
Qualitative analysis
Wavelengths
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two unified models of dark matter (DM) and dark energy (DE) are analysed, namely the Generalized Chaplygin Gas and the Modified Chaplygin Gas models. We study the qualitative behaviour of gravitational perturbations in both models, analysing their dynamical systems which describe the linear density perturbations, and graphically show the wavenumber, or k-dependence of the solutions. Finally we compare the two models and try to conclude which of them is close to available observations.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1269/1/012016