Stability analysis of two-fluid dark energy models

In this paper, we have studied the stability of the cosmological models with dark energy and combination of matter fields and dark energy in an anisotropic space time. The pressure anisotropy along the spatial directions are derived and its stability in each direction has been examined. The four mod...

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Bibliographic Details
Published in:Physica scripta 2021-04, Vol.96 (4), p.45006
Main Authors: Mishra, B, Esmaeili, Fakhereh Md, Ray, Pratik P, Tripathy, S K
Format: Article
Language:English
Subjects:
Dark Energy
General Relativity
Hubble Parameter
Scale Factor
Stability Analysis
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Summary:In this paper, we have studied the stability of the cosmological models with dark energy and combination of matter fields and dark energy in an anisotropic space time. The pressure anisotropy along the spatial directions are derived and its stability in each direction has been examined. The four models presented here, show its stability on certain spatial direction. The role of matter field on the stability analysis has been obtained. The positive and negative value of cosmic string completely changed the stability behaviour of the model. The presence of a magnetic field disturbs the stability aspects of the models at least in an early epoch.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/abdf82