Quantum Dynamics Beyond the Gaussian Approximation

TL;DR

This paper introduces an improved quantum dynamics method that surpasses the Gaussian approximation and can be extended to quantum field theory, enhancing the study of early universe scenarios.

Contribution

The authors develop a new method that improves upon the Gaussian approximation for quantum dynamics and is adaptable to field-theoretic applications.

Findings

Demonstrates superiority over Gaussian approach

Applicable to quantum field theory

Enhances understanding of early universe quantum dynamics

Abstract

The time dependent quantum variational principle is emerging as an important means of studying quantum dynamics, particularly in early universe scenarios. To date all investigations have worked within a Gaussian framework. Here we present an improved method which is demonstrated to be superior to the Gaussian approach and may be naturally extended to the field--theoretic case.