# Singularity avoidance in Bianchi I quantum cosmology

## TL;DR

This paper explores how quantum effects can prevent singularities in anisotropic Bianchi I cosmological models within quantum geometrodynamics, extending previous isotropic results.

## Contribution

It formulates criteria for singularity avoidance in Bianchi class A models and demonstrates classical singularities can be avoided in Bianchi I models with and without matter.

## Key findings

- Classical singularities are generally avoided in Bianchi I quantum models.
- Criteria for singularity avoidance are established for Bianchi class A models.
- Explicit results are provided for models with different matter contents.

## Abstract

We extend recent discussions of singularity avoidance in quantum gravity from isotropic to anisotropic cosmological models. The investigation is done in the framework of quantum geometrodynamics (Wheeler-DeWitt equation). We formulate criteria of singularity avoidance for general Bianchi class A models and give explicit and detailed results for Bianchi I models with and without matter. We find that the classical singularities can generally be avoided in these models.