Thawing in a coupled quintessence model

We consider the thawing model in the framework of coupled quintessence model. The effective potential has Z 2 symmetry which is broken spontaneously when the dark matter density becomes less than a critical value leading the quintessence equation of state parameter to deviate from - 1 . Conditions r...

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Bibliographic Details
Published in:	General relativity and gravitation Vol. 48; no. 10; pp. 1 - 14
Main Authors:	Honardoost, M., Sadjadi, H. Mohseni, Sepangi, H. R.
Format:	Journal Article
Language:	English
Published:	New York Springer US 01-10-2016 Springer Nature B.V
Subjects:	Astronomy Astrophysics and Cosmology Classical and Quantum Gravitation Dark matter Differential Geometry Gravity Mathematical and Computational Physics Melting Physics Physics and Astronomy Quantum Physics Quintessence (cosmology) Relativity Theory Research Article Thawing Theoretical Cosmology Thawing model Dark energy Dark matter Coupled quintessence
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Summary:	We consider the thawing model in the framework of coupled quintessence model. The effective potential has Z 2 symmetry which is broken spontaneously when the dark matter density becomes less than a critical value leading the quintessence equation of state parameter to deviate from - 1 . Conditions required for this procedure are obtained and analytical solution for the equation of state parameter is derived.
ISSN:	0001-7701 1572-9532
DOI:	10.1007/s10714-016-2125-3