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International Journal of Theoretical Physics

, Volume 51, Issue 9, pp 2771–2778 | Cite as

Can Neutrino Viscosity Drive the Late Time Cosmic Acceleration?

  • Sudipta Das
  • Narayan Banerjee
Article

Abstract

In this paper it has been shown that the neutrino bulk viscous stresses can give rise to the late time acceleration of the universe. It is found that a number of spatially flat FRW models with a negative deceleration parameter can be constructed using neutrino viscosity and one of them mimics a ΛCDM model. This does not require any exotic dark energy component or any modification of gravity.

Keywords

Dark energy Neutrino viscosity Accelerated expansion of the universe 

Notes

Acknowledgement

Authors would like to thank Relativity and Cosmology Research Centre at Jadavpur University, Kolkata where part of this work has been done and the referees useful comments.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Department of PhysicsVisva-BharatiSantiniketanIndia
  2. 2.Harish-Chandra Research InstituteJhunsiIndia
  3. 3.Indian Institute of Science Education and Research-KolkataNadiaIndia

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