Matter-Antimatter Asymmetry Of The Universe and Baryon Formation From Non-Equilibrium Quarks and Gluons

TL;DR

This paper investigates how baryons formed from non-equilibrium quarks and gluons in the early universe, using first-principles non-equilibrium QCD to understand the matter-antimatter asymmetry observed today.

Contribution

It applies the closed-time path integral formalism in non-equilibrium QCD to study baryon formation from quarks and gluons after the big bang, providing a first-principles approach.

Findings

Insights into baryon formation mechanisms

Connection between non-equilibrium QCD and matter-antimatter asymmetry

Framework for future quantitative studies

Abstract

Baryon number violation, CP violation and non-equilibrium evolution of the early universe just after the big bang are proposed in the literature to be necessary conditions to explain the observed matter-antimatter asymmetry (baryon asymmetry) of the universe. Since the free quarks are not observed and the baryons are formed by the confinement of quarks and gluons, it is necessary to understand how the baryons were formed for the first time from the non-equilibrium quarks and gluons in the early universe just after the big bang in order to study the baryon asymmetry of the universe. In this paper we study the baryon formation from the non-equilibrium quarks and gluons in the early universe just after the big bang from the first principle in QCD by using the closed-time path integral formalism in non-equilibrium QCD.