Eur. Phys. J. C (2017) 77: 131
https://doi.org/10.1140/epjc/s10052-017-4691-2

Regular Article - Theoretical Physics

Warm modified Chaplygin gas shaft inflation

Department of Mathematics, COMSATS Institute of Information Technology, Lahore, 54000, Pakistan

^* e-mail: jawadab181@yahoo.com
^** e-mail: abduljawad@ciitlahore.edu.pk

Received: 8 September 2016
Accepted: 19 January 2017
Published online: 25 February 2017

Abstract

In this paper, we examine the possible realization of a new inflation family called “shaft inflation” by assuming the modified Chaplygin gas model and a tachyon scalar field. We also consider the special form of the dissipative coefficient and calculate the various inflationary parameters in the scenario of strong and weak dissipative regimes. In order to examine the behavior of inflationary parameters, the ––r, and – planes (where , and represent the spectral index, its running, tensor-to-scalar ratio, and scalar field, respectively) are being developed, which lead to the constraints , , and . It is quite interesting that these results of the inflationary parameters are compatible with BICEP2, WMAP and recent Planck data.