arXiv:1012.2692v1 [gr-qc] 13 Dec 2010 Interacting polytropic gas model of dark energy in non-flat universe M. Malekjani 1,2 ∗ ,A. Khodam-Mohammadi 1† and M. Taji 1 1 1-Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan 65178, Iran 2-Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha, Iran Abstract The polytropic gas model is investigated as an interacting dark energy scenario. In this model the evolution of cosmological parameters such as the EoS parameter w Λ , energy density Ω Λ and deceleration parameter q are investigated. These parameters are dependent on the parameters of the model. We show that, depending on the parameter of model, the interacting polytropic gas can behave as a quintessence or phantom dark energy. 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. * Email: malekjani@basu.ac.ir † Email: khodam@basu.ac.ir