Exhaustive investigation of the duration of inflation in effective anisotropic loop quantum cosmology

TL;DR

This paper investigates how anisotropies affect the duration of inflation in loop quantum cosmology, showing that higher shear shortens inflation but still aligns with observational data, supporting the scenario's viability.

Contribution

It provides an exhaustive analysis of inflation duration in anisotropic loop quantum cosmology, highlighting the impact of shear and the compatibility with observational constraints.

Findings

Higher shear shortens inflation duration.

Probability distribution peaks at data-compatible values.

Bounce scenario remains phenomenologically viable.

Abstract

This article addresses the issue of estimating the duration in inflation in bouncing cosmology when anisotropies, inevitably playing an important role, are taken into account. It is shown that in Bianchi-I loop quantum cosmology, the higher the shear, the shorter the period of inflation. In a range of parameters, the probability distribution function of the duration of inflation is however peaked at values compatible with data, but not much higher. This makes the whole bounce/inflationary scenario consistent and phenomenologically appealing as all the information from the bounce might then not have been fully washed out.