Gauss-Bonnet dark energy Chaplygin gas model

. The correspondence of the Gauss-Bonnet (GB) model and its modified (MGB) model of dark energy with the standard and generalized Chaplygin gas-scalar field models (SCG and GCG) have been studied in a flat universe. The exact solution of potentials and scalar fields, which describe the accelerated e...

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Bibliographic Details
Published in:European physical journal plus 2016-11, Vol.131 (11), p.398, Article 398
Main Authors: Khodam-Mohammadi, A., Karimkhani, E., Alaei, A.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Astronomical models
Atomic
Chaplygin gas
Complex Systems
Condensed Matter Physics
Dark energy
Exact solutions
Mathematical and Computational Physics
Molecular
Optical and Plasma Physics
Perturbation theory
Physics
Physics and Astronomy
Regular Article
Scalars
Theoretical
Universe
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Summary:. The correspondence of the Gauss-Bonnet (GB) model and its modified (MGB) model of dark energy with the standard and generalized Chaplygin gas-scalar field models (SCG and GCG) have been studied in a flat universe. The exact solution of potentials and scalar fields, which describe the accelerated expansion of the universe, are reconstructed. According to the evolutionary behavior of the GB and MGB models, the same form of dynamics of scalar field and potential for different SCG and GCG models are derived. By calculating the squared sound speed of the MGB, GB model as well as the SCG, GCG, and investigating the GB-Chaplygin gas from the viewpoint of linear perturbation theory, we find that the best results, which are consistent with the observation, may appear by considering MGB-GCG. Also, we find out some bounds for parameters.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/i2016-16398-5