Boost invariant quantum evolution of a meson field at large proper times

TL;DR

This paper develops asymptotic solutions for a scalar meson field's evolution at large proper times, relevant for understanding meson gas expansion and chiral condensate formation in ultra-relativistic collisions.

Contribution

It introduces a novel asymptotic solution approach for the quantum evolution of a meson field in the Gaussian approximation at large proper times.

Findings

Describes late-time expansion of a meson gas with boost invariance

Provides insights into disoriented chiral condensate formation

Connects quantum field solutions to ultra-relativistic collision phenomena

Abstract

We construct asymptotic solutions of the functional Schroedinger equation for a scalar field in the Gaussian approximation at large proper time. These solutions describe the late proper time stages of the expansion of a meson gas with boost invariant boundary conditions. The relevance of these solutions for the formation of a disoriented chiral condensate in ultra relativistic collisions is discussed.