Warm-polytropic inflationary universe model

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 $\Gamma$. 2- $\Gamma$ as a function of scalar field $\varphi$. 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 ${\alpha }_s$, in slow-roll approximation.

13 pages, 1 figure

References in corpus (5)

• The Effects of Thermonuclear Reaction-Rate Variations on 26Al Production in Massive Stars: a Sensitivity Study
• Enhanced polarization of CMB from thermal gravitational waves
• Chaplygin inspired Inflation
• Warm inflation on the brane
• Warm-Chaplygin inflationary universe model

Cited by in corpus (4)

• Tachyon warm-intermediate inflation in the light of Planck data
• Constant roll warm inflation in high dissipative regime
• Thermodynamic descriptions of Polytropic gas and its viscous type as the dark energy candidates
• Polytropic Inspired Inflation on the Brane