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Observational constraints on a cosmological model with Lagrange multipliers

Authors
  • Cid, Antonella
  • Labrana, Pedro
Type
Preprint
Publication Date
Sep 11, 2012
Submission Date
Sep 11, 2012
Identifiers
DOI: 10.1016/j.physletb.2012.09.022
Source
arXiv
License
Yellow
External links

Abstract

Cosmological models with Lagrange multipliers are appealing because they could explain the behaviour of the dark sector in a unified way. In this work we analyse extensions to the "Dust of Dark Energy model" proposed in arXiv:1003.5751 by including spatial curvature and more general potentials of the scalar field. We perform dynamical system analysis and we determine the evolution of the equation of state parameter as a function of the scale factor. We present observational constraints on this model by using Union2.1 dataset and H(z) data.

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