Confinement and chiral symmetry breaking via domainlike structures in the QCD vacuum
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(Published version)
Date
2001
Authors
Kalloniatis, Alexander Constantine
Nedelko, Sergei N.
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Journal article
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Physical Review D, 2001; 64(11):114025
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Alex C. Kalloniatis and Sergei N. Nedelko
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Abstract
A qualitative mechanism for the emergence of domain structured background gluon fields due to singularities in gauge field configurations is considered, and a model displaying a type of mean field approximation to the QCD partition function based on this mechanism is formulated. An estimation of the vacuum parameters (gluon condensate, topological susceptibility, string constant and quark condensate) indicates that domainlike structures lead to an area law for the Wilson loop, nonzero topological susceptibility and spontaneous breakdown of chiral symmetry. Gluon and ghost propagators in the presence of domains are calculated explicitly and their analytical properties are discussed. The Fourier transforms of the propagators are entire functions and thus describe confined dynamical fields.
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School of Chemistry and Physics : Physics and Mathematical Physics
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©2001 American Physical Society