Inflationary Weak Anisotropic Model with General Dissipation Coefficient

TL;DR

This paper investigates anisotropic warm inflation models with a general dissipation coefficient, analyzing their dynamics and compatibility with recent cosmological data within a Bianchi type I universe.

Contribution

It introduces a generalized dissipation coefficient into anisotropic inflation models and evaluates their observational viability using current cosmological data.

Findings

Models remain compatible with WMAP9, Planck, and BICEP2 data.

Derived scalar and tensor power spectra under slow-roll approximation.

Constrained model parameters consistent with observational bounds.

Abstract

This paper explores the dynamics of warm intermediate and logamediate inflationary models during weak dissipative regime with a general form of dissipative coefficient. We analyze these models within the framework of locally rotationally symmetric Bianchi type I universe. In both cases, we evaluate solution of inflaton, effective scalar potential, dissipative coefficient, slow-roll parameters, scalar and tensor power spectra, scalar spectral index and tensor to scalar ratio under slow-roll approximation. We constrain the model parameters using recent data and conclude that anisotropic inflationary universe model with generalized dissipation coefficient remains compatible with WMAP9, Planck and BICEP2 data.