# Bianchi I effective dynamics in Quantum Reduced Loop Gravity

## TL;DR

This paper investigates the effective quantum dynamics of Bianchi I spacetime within Quantum Reduced Loop Gravity, showing singularity resolution and comparing results with Loop Quantum Cosmology, highlighting both similarities and differences.

## Contribution

It introduces a statistical regularization scheme in Quantum Reduced Loop Gravity for Bianchi I spacetime and compares its effective dynamics with Loop Quantum Cosmology.

## Key findings

- Energy density, expansion scalar, and shear are bounded in Quantum Reduced Loop Gravity.
- Classical singularity is resolved for generic initial conditions.
- Dynamics match semiclassically but differ after bounces.

## Abstract

The effective quantum dynamics of Bianchi I spacetime is addressed within the statistical regularization scheme in Quantum Reduced Loop Gravity. The case of a minimally coupled massless scalar field is studied and compared with the effective $\bar{\mu}-$Loop Quantum Cosmology. The dynamics provided by the two approaches match in the semiclassical limit but differ significantly after the bounces. Analytical and numerical inspections show that energy density, expansion scalar and shear are bounded also in Quantum Reduced Loop Gravity and the classical singularity is resolved for generic initial conditions in all spatial directions.