Cosmological Chaplygin gas as modified gravity

In the scramble for the understanding of the nature of dark matter and dark energy, it has recently been suggested that the change of behavior of the missing energy density might be regulated by the change in the equation of state of the background fluid. The Chaplygin Gas (CG) model in cosmology is...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-10, Vol.905 (1), p.12015
Main Authors: Elmardi, Maye, Abebe, Amare
Format: Article
Language:English
Subjects:
Chaplygin gas
Cosmology
Dark energy
Dark matter
Equations of state
Flux density
Physics
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Summary:In the scramble for the understanding of the nature of dark matter and dark energy, it has recently been suggested that the change of behavior of the missing energy density might be regulated by the change in the equation of state of the background fluid. The Chaplygin Gas (CG) model in cosmology is one of the most profound candidates for this suggestion. This work aims to bring to light a geometric interpretation of the model by re-writing the difierent toy models in terms of exact f(R) gravity solutions that are generally quadratic in the Ricci scalar with appropriate ΛCDM limiting solutions.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/905/1/012015