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arXiv · 1403.0186

Warm-Intermediate Inflationary Universe Model with Viscous Pressure in High Dissipative Regime

M. R. Setare·V. Kamali
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Abstract

Warm inflation model with bulk viscous pressure in the context of "intermediate inflation" where the cosmological scale factor expands as $a(t)=a_0\exp(At^f)$, is studied. The characteristics of this model in slow-roll approximation and in high dissipative regime are presented in two cases: 1- Dissipative parameter $\Gamma$ as a function of scalar field $\phi$ and bulk viscous coefficient $\zeta$ as a function of energy density $\rho$. 2- $\Gamma$ and $\zeta$ are constant parameters. Scalar, tensor perturbations and spectral indices for this scenario are obtained. The cosmological parameters appearing in the present model are constrained by recent observational data (WMAP7).

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M. R. Setare, V. Kamali. 2014-03-02. Warm-Intermediate Inflationary Universe Model with Viscous Pressure in High Dissipative Regime. https://doi.org/10.1007/s10714-014-1698-y

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