
%0 Journal Article
%A Suganuma, H. 
%A Umisedo, S. 
%A Sasaki, S. 
%A Toki, H. 
%A Miyamura, O. 
%T Monopole Dominance for Nonperturbative QCD
%J Australian Journal of Physics
%D 1997/01/24
%V 50
%N 1
%P 233-244
%K 
%R https://doi.org/10.1071/P96045
%U https://www.publish.csiro.au/paper/P96045 
%X Monopole dominance for the nonperturbative features in QCD is studied both in the continuum and the lattice gauge theories. First, we study the dynamical chiral-symmetry breaking (D&chi;SB) in the dual Higgs theory using the effective potential formalism. We find that the main driving force for D&chi;SB is brought from the confinement part in the nonperturbative gluon propagator rather than the short-range part, which means monopole dominance for D&chi;SB. Second, the correlation between instantons and QCD&#8211;monopoles is studied. In the Polyakov-like gauge, where A4(x) is diagonalized, the QCD&#8211;monopole trajectory penetrates the centre of each instanton, and becomes complicated in the multi-instanton system. Finally, using the SU(2) lattice gauge theory with 164 and 163 &#215; 4, the instanton number is measured in the singular (monopole-dominating) and regular (photon-dominating) sectors, respectively. Instantons and anti-instantons only exist in the monopole sector both in the maximally abelian gauge and in the Polyakov gauge, which means monopole dominance for the topological charge. 
