Eur. Phys. J. Plus (2016) 131: 242
https://doi.org/10.1140/epjp/i2016-16242-0

Regular Article

Nonlinear spinor field in isotropic space-time and dark energy models

Laboratory of Information Technologies, Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia

^* e-mail: bijan@jinr.ru

Received: 2 June 2016
Accepted: 22 June 2016
Published online: 25 July 2016

Abstract

Within the scope of the isotropic FRW cosmological model the role of nonlinear spinor field in the evolution of the Universe is studied. It is found that unlike in anisotropic cosmological models in the present case the spinor field does not possess nontrivial non-diagonal components of energy-momentum tensor, consequently it does not impose any additional restrictions on the components of the spinor field or metric function. The spinor description of different matter was given and the evolution of the Universe corresponding to these sources is illustrated. In the framework of a three-fluid system the utility of spinor description of matter is established.