Instanton, Monopole Condensation and Confinement
Hideo Suganuma, Masahiro Fukushima, Hiroko Ichie, Atsunori Tanaka
Abstract
The confinement mechanism in the nonperturbative QCD is studied in terms of topological excitation as QCD-monopoles and instantons. In the 't Hooft abelian gauge, QCD is reduced into an abelian gauge theory with monopoles, and the QCD vacuum can be regarded as the dual superconductor with monopole condensation, which leads to the dual Higgs mechanism. The monopole-current theory extracted from QCD is found to have essential features of confinement. We find also close relation between monopoles and instantons using the lattice QCD. In this framework, the lowest 0++ glueball (1.5 1.7GeV) can be identified as the QCD-monopole or the dual Higgs particle.
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