Generic framework for non-perturbative QCD in light hadrons

2025/01/14 by Wei-Yang Liu, Liu, Wei-Yang · 2 citations
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies #High-Energy Particle Collisions Research

paper · pdf · doi:10.48550/arxiv.2501.07776

Abstract

In this paper, we review several topological aspects of the QCD vacuum and recent progress on this quantitative unifying framework for the low-lying hadron physics rooted in QCD by introducing the vacuum as a liquid of pseudoparticles. We have developed systematic density expansion on the dilute vacuum to calculate the vacuum expectation values (VEVs) and generalize the calculations to hadronic matrix element and hadronic form factors using the instanton liquid model (ILM). Thereby, the nonperturbative physics can be analyzed in a systematic framework with a few parameters: instanton size ρ and instanton density n_I+A, and current quark mass m.

Cited by

• The color force acting on a quark in the pion and nucleon
• Different scenarios of dynamical chiral symmetry breaking in the interacting instanton liquid model via flavor symmetry breaking

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