Spontaneous chiral symmetry breaking and mass gap of QCD in finite volume

2024/03/03 by Xiaolan Meng, Meng, Xiaolan, Bo‐Lun Hu +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Cold Atom Physics and Bose-Einstein Condensates

paper · pdf · doi:10.48550/arxiv.2403.01378

Abstract

We present the lattice QCD simulation with the 2+1+1 flavor full QCD ensembles using near-physical quark masses and different spatial sizes L, at a∼ 0.055 fm. The results suggest that spontaneous chiral symmetry breaking is effectively restored at L≤ 1.0 fm, while the gap between the nucleon and pion masses remains.

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