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

Abstract

Warm inflation model with bulk viscous pressure in the context of "intermediate inflation" where the cosmological scale factor expands as $a(t)=a_0\exp (A{t}^f)$, 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 $\varphi$ 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).

arXiv comment17 pages, 4 figures, accepted for publication in General Relativity and Gravitation. arXiv admin note: substantial text overlap with arXiv:1312.2832, arXiv:1302.0493

References in corpus (28)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Inflation Dynamics and Reheating
• Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
• Warm Inflation
• Gauss-Bonnet dark energy
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Galactic Foreground Emission
• Singularity-free cosmological solutions of the superstring effective action
• Scalar perturbation spectra from warm inflation
• Warm Inflation in the Adiabatic Regime- a Model, an Existence Proof for Inflationary Dynamics in Quantum Field Theory
• Strong Dissipative Behavior in Quantum Field Theory
• Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy
• Charged black holes in effective string theory
• Interpolating the Stage of Exponential Expansion in the Early Universe: a possible alternative with no reheating
• Gauss-Bonnet Quintessence: Background Evolution, Large Scale Structure and Cosmological Constraints
• Perturbation Spectra from Intermediate Inflation
• Warm inflation model building
• Dissipation coefficients from scalar and fermion quantum field interactions
• A First Principles Warm Inflation Model that Solves the Cosmological Horizon/Flatness Problems
• If Gauss-Bonnet interaction plays the role of dark energy
• Tachyon warm inflationary universe models
• Cosmological perturbations in warm inflationary models with viscous pressure
• Inflaton field potential producing the exactly flat spectrum of adiabatic perturbations
• Asymptotic behavior of the warm inflation scenario with viscous pressure
• Tachyon Field in Intermediate Inflation
• Inflationary potentials yielding constant scalar perturbation spectral indices
• Warm-Intermediate inflationary universe model in braneworld cosmologies
• Tachyon Warm-Intermediate Inflationary Universe Model in High Dissipative Regime
• Curvaton field and intermediate inflationary universe model

Cited by in corpus (7)

• Viscous Cosmology for Early- and Late-Time Universe
• Recent developments in warm inflation
• Constant roll warm inflation in high dissipative regime
• No stable dissipative phantom scenario in the framework of a complete cosmological dynamics
• Bulk viscosity, interaction and the viability of phantom solutions
• Inflationary Weak Anisotropic Model with General Dissipation Coefficient
• Thermal relics in cosmology with bulk viscosity