Astrophysics and Space Science

, Volume 333, Issue 1, pp 277–285

Crossing the phantom divide with a classical Dirac field

Original Article

DOI: 10.1007/s10509-010-0592-7

Cite this article as:
Cataldo, M. & Chimento, L.P. Astrophys Space Sci (2011) 333: 277. doi:10.1007/s10509-010-0592-7


In this paper we consider a spatially flat Friedmann-Robertson-Walker (FRW) cosmological model with cosmological constant, containing a stiff fluid and a classical Dirac field. The proposed cosmological scenario describes the evolution of effective dark matter and dark energy components reproducing, with the help of that effective multifluid configuration, the quintessential behavior. We find the value of the scale factor where the effective dark energy component crosses the phantom divide. The model we introduce, which can be considered as a modified ΛCDM one, is characterized by a set of parameters which may be constrained by the astrophysical observations available up to date.


Classical Dirac fields Phantom divide 

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Departamento de Física, Facultad de CienciasUniversidad del Bío–BíoCasilla 5-C, ConcepciónChile
  2. 2.Departamento de Física, Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina

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