Eur. Phys. J. Plus (2015) 130: 84
https://doi.org/10.1140/epjp/i2015-15084-6

Regular Article

Interacting holographic extended Chaplygin gas and phantom cosmology in the light of BICEP2

¹ Department of Physics, Faculty of Basic Sciences, University of Mazandaran, P. O. Box 47416-95447, Babolsar, Iran
² School of Physics, Damghan University, Damghan, Iran

^* e-mail: h.farahani@umz.ac.ir

Received: 1 January 2015
Revised: 24 February 2015
Accepted: 30 March 2015
Published online: 30 April 2015

Abstract

In this paper, we study the holographic dark energy density and interacting extended Chaplygin gas energy density in the Einstein gravity. We reconstruct the scalar field and the scalar potential describing the extended Chaplygin gas. In the special case, we obtain energy density and investigate some cosmological parameters. Assuming interaction between components we find energy density for some different parametrization of total EoS. We analyze tensor-to-scalar ratio and use recent observational data of BICEP2 to fix the model parameters.