Eur. Phys. J. C 69, 547-553 (2010)
https://doi.org/10.1140/epjc/s10052-010-1398-z

Dark viscous fluid coupled with dark matter and future singularity

¹ Dipartimento di Fisica, Università di Trento, Trento, Italy
² Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Trento, Trento, Italy

l.sebastiani@science.unitn.it

Received: 8 June 2010
Revised: 22 June 2010
Published online: 14 September 2010

Abstract

We study the effects of a viscous fluid coupled with dark matter in our universe. We consider bulk viscosity in the cosmic fluid and we assume the existence of a coupling between fluid and dark matter, in order to reproduce a stable de Sitter universe protected against future-time singularities. More general inhomogeneous fluids are studied related to future singularities.