Abstract
In this paper, we study extended Chaplygin gas as a candidate for inflation and predict the values of gas parameters for a physically viable cosmological model. The extended Chaplygin gas which proposed recently has n+2 free parameters. When n=1, there are three parameters which are corresponding to modified Chaplygin gas. Here we focus on the second order equation of state where n=2, so we have generally four free parameters. Under some assumptions, we reduced free parameters of the model to the only one parameter and try to fix it using the dimensionless age parameter. Also we check validity of our calculations using recent observations of BICEP2.
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Kahya, E.O., Pourhassan, B. Observational constraints on the extended Chaplygin gas inflation. Astrophys Space Sci 353, 677–682 (2014). https://doi.org/10.1007/s10509-014-2069-6
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DOI: https://doi.org/10.1007/s10509-014-2069-6