Talk presented by Jeffrey Greensite

Parallel Session: Confinement IV

Thursday July 1st, 17.00 - 17.20, Fermi Room

Center Symmetry vs. Monopole Dominance on Abelian-Projected Lattices

Abstract: We report on a breakdown of both monopole dominance and positivity in abelian-projected lattice Yang-Mills theory. The breakdown is associated with observables involving two units of the abelian electric charge. We find that the projected lattice has at most a global Z(2) symmetry in the confined phase, rather than the global U(1) symmetry that might be expected in a monopole Coulomb gas picture. Implications for monopole and center vortex theories of confinement are discussed.

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