Relevant momentum components of gluons for confinement and chiral symmetry breaking
Arata Yamamoto, Hideo Suganuma (Kyoto U.)
TL;DR
This paper explores how different momentum components of gluons contribute to confinement and chiral symmetry breaking in lattice QCD, revealing that these phenomena are driven by distinct gluon momentum ranges.
Contribution
It introduces a lattice framework to selectively cut off gluon momentum components and analyzes their specific roles in confinement and chiral symmetry breaking.
Findings
Confinement is primarily influenced by low-momentum gluons.
Chiral symmetry breaking involves different gluon momentum components.
Different gluon momentum ranges are responsible for confinement and chiral symmetry breaking.
Abstract
We investigate which momentum components of gluons induce color confinement and spontaneous chiral symmetry breaking in lattice QCD. For this purpose, we formulate a lattice framework to introduce the momentum cutoff of the gluon field. Using this framework, we calculate the quark-antiquark potential, the color flux tube, the chiral condensate, and the Dirac spectrum. Our results suggest that confinement and chiral symmetry breaking are induced by somehow different momentum components of gluons.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Cold Atom Physics and Bose-Einstein Condensates