Eur. Phys. J. C (2011) 71: 1711
https://doi.org/10.1140/epjc/s10052-011-1711-5

Regular Article - Theoretical Physics

Notes on dark energy interacting with dark matter and unparticle in loop quantum cosmology

¹ Center for Advanced Mathematics and Physics (CAMP), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
² Department of Physics, Faculty of Sciences, Tarbiat Moa’llem University, Tehran, Iran

^* e-mail: mjamil@camp.nust.edu.pk

Received: 25 May 2011
Revised: 30 June 2011
Published online: 30 July 2011

Abstract

We investigate the behavior of dark energy interacting with dark matter and unparticle in the framework of loop quantum cosmology. In four toy models, we study the interaction between the cosmic components by choosing different coupling functions representing the interaction. We found that there are only two attractor solutions namely dark energy dominated and dark matter dominated Universe. The other two models are unstable, as they predict either a dark energy filled Universe or one completely devoid of it.