Supported by National Natural Science Foundation of China(10547009);Research Backbone Fostering Program of Knowledge and S&T Innovation Project of NWNU(KJCXGC 03-41)
It is shown that SU(2) QCD admits an dual Abelian-Higgs phase, with a Higgs vacuum of a type-Ⅱ superconductor. This is done by using a connection decomposition for the gluon field and the random-direction approxima...