出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Dual superconductivity is believed to be a promising mechanism for quark confinement. Indeed, that
this picture is true has been confirmed in the maximal Abelian (MA) gauge. However, it is not yet
confirmed in any other gauge, and the MA gauge explicitly breaks color symmetry. To remedy this
defect, we propose to use our compact formulation of a non-linear change of variables (NLCV), called
once by the Cho-Faddeev-Niemi (CFN) decomposition, on a lattice. This formulation has succeeded
to extract the magnetic monopole with integer-valued magnetic charge in the gauge-invariant way. We
present measurements of various correlation functions for the operators constructed from the NLCV in
SU(2) Yang-Mills theory. Some of our results reproduce previous results obtained in MA gauge, e.g.,
DeGrand-Toussaint monopole, infrared Abelian dominance and off-diagonal gluon mass generation.
These studies preserve color symmetry, which is sharp contrast to the conventional MA gauge. We
argue the gauge fixing independence of these results and the implications for quark confinement
