Observational constraints on the extended Chaplygin gas inflation

E. O. Kahya, B. Pourhassan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)677-682
Number of pages6
JournalAstrophysics and Space Science
Volume353
Issue number2
DOIs
Publication statusPublished - 1 Sept 2014

Bibliographical note

Publisher Copyright:
© 2014, Springer Science+Business Media Dordrecht.

Keywords

  • Cosmology
  • Inflation

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