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The color-electric flux tube of Abelian-projected (AP) SU(2) lattice gaugetheory in the maximally Abelian gauge (MAG) is revisited. It is shown that thelattice Gribov copy effect in the MAG is crucial for the monopole-related partsof the flux-tube profiles. Taking into account both the gauge fixing procedureand the effect of finite quark-antiquark distance properly, the scalingproperty of the flux-tube profile is confirmed. The quantitative relationbetween the measured AP flux tube and the flux-tube solution of the U(1) dualAbelian Higgs (DAH) model is also discussed. The fitting of the AP flux tube interms of the DAH flux tube indicates that the vacuum can be classified asweakly type-I dual superconductor.Comment: 24 pages, 13 eps figures, revtex4, minor rewordings, Acknowledgements  completed, version to appear in Phys. Rev.

Detailed study of the Abelian-projected SU(2) flux tube and its dual Ginzburg-Landau analysis