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arXiv · 1307.7117

Warm-polytropic inflationary universe model

M. R. Setare·M. J. S. Houndjo·V. Kamali
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Abstract

In the present paper we study warm inflationary universe models in the context of a polytropic gas. We derive the characteristics of this model in slow-roll approximation and develop our model in two cases, 1- For a constant dissipative parameter $Γ$. 2- $Γ$ as a function of scalar field $ϕ$. In these cases we will obtain exact solution for the scalar field and Hubble parameter. We will also obtain explicit expressions for the tensor-scalar ratio $R$, scalar spectrum index $n_s$ and its running $α_s$, in slow-roll approximation.

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M. R. Setare, M. J. S. Houndjo, V. Kamali. 2013-07-02. Warm-polytropic inflationary universe model. https://doi.org/10.1142/s0218271813500417

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