Confining Configurations in QCD and Relation to Rigid Strings
نویسنده
چکیده
A description of confinement in QCD requires the presence of magnetic monopoles[1]. The resulting effective theory can be interpretted as producing dual Meissner effect [2] responsible for confinement. Lattice QCD studies indicate that monopoles cover the physical vacuum in the confining phase[3]. Confinement is in the infrared regime where the QCD coupling is large so that one has to use non-perturbative analysis. In the non-confining phase, in the ultra-violet regime, we realize the important property, ’asymptotic freedom’, by using the full SU(3) gauge field configurations Aμ(x). In the confining phase, we have the monopole dominance and a partial (subset of) Aμ(x) will be sufficient to realize confinement through dual Meissner effect. This will be best described by the ’magnetic symmetry’ [4], which reveals the topological nature (of monopoles) of QCD. This symmetry restricts the dynamical degrees of freedom while keeping the gauge degrees of freedom.
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