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Instantons and Monopoles in the Nonperturbative QCD | | Hideo Suganuma
; Hiroko Ichie
; Atsunori Tanaka
; Kazuhisa Amemiya
; | | Date: |
20 Apr 1998 | | Journal: | Prog.Theor.Phys.Suppl. 131 (1998) 559-571 | | Subject: | hep-lat | | Affiliation: | RCNP), Hiroko Ichie(RCNP), Atsunori Tanaka(RCNP) and Kazuhisa Amemiya(RCNP | | Abstract: | We study the confinement physics in QCD in the maximally abelian (MA) gauge using the SU(2) lattice QCD. To clarify the origin of abelian dominance for the long-range physics, we study the charged-gluon propagator in the lattice QCD, and find that the effective mass $m_{ch} simeq 0.9 {
m GeV}$ of the charged gluon is induced by the MA gauge fixing. In the MA gauge, there appears the global network of the monopole world-line covering the whole system, which would be identified as monopole condensation at a large scale. To prove monopole condensation, we apply the dual gauge formalism to the monopole part, and derive the inter-monopole potential from the dual Wilson loop in the MA gauge. In the monopole part, which carries the nonperturbative aspects of QCD, the dual gluon mass is evaluated as $m_B simeq $0.5GeV, which is the evidence of the dual Higgs mechanism by monopole condensation. As for the monopole structure, the large fluctuation of off-diagonal gluons remains around the monopole in the MA gauge, and large cancellation occurs between the diagonal and off-diagonal action densities to keep the total QCD action finite. The charged-gluon rich region around the QCD-monopole would provide the effective monopole size as the critical scale of the abelian projected QCD. Instantons are expected to appear in the charged-gluon rich region around the monopole world-line in the MA gauge, which leads to the local correlation between monopoles and instantons. | | Source: | arXiv, hep-lat/9804027 | | Services: | Forum | Review | PDF | Favorites | |
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