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International Journal of Theoretical Physics

, Volume 50, Issue 10, pp 3112–3124 | Cite as

Cosmological Implications of Interacting Polytropic Gas Dark Energy Model in Non-flat Universe

  • M. Malekjani
  • A. Khodam-Mohammadi
  • M. Taji
Article

Abstract

The polytropic gas model is investigated as an interacting dark energy scenario. The cosmological implications of the model including the evolution of EoS parameter w Λ, energy density ΩΛ and deceleration parameter q are investigated. We show that, depending on the parameter of model, the interacting polytropic gas can behave as a quintessence or phantom dark energy. In this model, the phantom divide is crossed from below to up. The evolution of q in the context of polytropic gas dark energy model represents the decelerated phase at the early time and accelerated phase later. The singularity of this model is also discussed. Eventually, we establish the correspondence between interacting polytropic gas model with tachyon, K-essence and dilaton scalar fields. The potential and the dynamics of these scalar field models are reconstructed according to the evolution of interacting polytropic gas.

Keywords

Dark energy theory Polytropic model 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of Physics, Faculty of ScienceBu-Ali Sina UniversityHamedanIran
  2. 2.Research Institute for Astronomy and Astrophysics of Maragha (RIAAM)MaraghaIran

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