Internal frame dragging and a global analog of the Aharonov-Bohm effect.
Phys Rev Lett 68:17 (1992) 2567-2571
NEW ORDER PARAMETERS FOR NONABELIAN GAUGE THEORIES
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ON THE POSSIBILITY OF SECOND ORDER PHASE TRANSITIONS IN SPONTANEOUSLY BROKEN GAUGE THEORIES
Phys.Lett.B 296 (1992) 364