Quark Confinement Physics from Lattice QCD

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dc.creatorSuganuma, H.
dc.creatorAmemiya, K.
dc.creatorIchie, H.
dc.creatorMatsufuru, H.
dc.creatorNemoto, Y.
dc.creatorTakahashi, T. T.
dc.date2004-07-10
dc.date.accessioned2026-07-07T03:39:09Z
dc.date.available2026-07-07T03:39:09Z
dc.descriptionWe study quark confinement physics using lattice QCD. In the maximally abelian (MA) gauge, the off-diagonal gluon amplitude is strongly suppressed, and then the off-diagonal gluon phase shows strong randomness, which leads to a large effective off-diagonal gluon mass, M_off=1.2GeV. Due to the large off-diagonal gluon mass in the MA gauge, low-energy QCD is abelianized like nonabelian Higgs theories. In the MA gauge, there appears a macroscopic network of the monopole world-line covering the whole system. We extract and analyze the dual gluon field B_mu from the monopole-current system in the MA gauge, and evaluate the dual gluon mass as m_B = 0.4-0.5GeV in the infrared region, which is a lattice-QCD evidence of the dual Higgs mechanism by monopole condensation. Even without explicit use of gauge fixing, we can define the maximal abelian projection by introducing a ``gluonic Higgs field'' phi(x), whose hedgehog singularities lead to monopoles. From infrared abelian dominance and infrared monopole condensation, infrared QCD is describable with the dual Ginzburg-Landau theory. In relation to the color-flux-tube picture for baryons, we study the three-quark (3Q) ground-state potential V_3Q in SU(3) lattice QCD at the quenched level, with the smearing technique for enhancement of the ground-state component. With accuracy better than a few %, V_3Q is well described by a sum of the two-body Coulomb part and the three-body linear confinement part sigma_3Q L_min, where L_min denotes the minimal value of the total length of the color flux tube linking the three quarks. Comparing with the Q-barQ potential, we find a universal feature of the string tension and the OGE result for the Coulomb coefficient.
dc.descriptionTalk given at International Symposium on Quantum Chromodynamics and Color Confinement (Confinement 2000), Osaka, Japan, 7-10 Mar 2000
dc.identifierhttps://arxiv.org/abs/hep-lat/0407020
dc.identifierhttp://arxiv.org/abs/hep-lat/0407020
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/38810
dc.subjectHigh Energy Physics - Lattice
dc.titleQuark Confinement Physics from Lattice QCD
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