Wilsonloop instantons
Abstract
Wilsonloop symmetry breaking is considered on a spacetime of the form M_{4}⊗K, where M_{4} is a fourdimensional spacetime and K is an internal space with nontrivial and finite fundamental group. We show in a simple model that the different vacua obtained by breaking a nonAbelian gauge group by Wilson loops are separated in the space of gauge potentials by a finiteenergy barrier. We then construct an interpolating gauge configuration between these vacua and show it to have minimum energy. Finally some implications of this construction are discussed.
 Publication:

Physical Review Letters
 Pub Date:
 September 1987
 DOI:
 10.1103/PhysRevLett.59.1069
 Bibcode:
 1987PhRvL..59.1069L
 Keywords:

 Gauge Theory;
 Symmetry;
 Physics (General);
 11.15.Ex;
 11.10.Kk;
 12.10.Gq;
 Spontaneous breaking of gauge symmetries;
 Field theories in dimensions other than four