Gauge Invariance and Lattice Monopoles

The number and the location of monopoles in Lattice configurations depend on the choice of the gauge, in contrast to the obvious requirement that monopoles, as physical objects, have a gauge-invariant status. It is proved, starting from non-abelian Bianchi identities, that monopoles are indeed gauge-invariant: the technique used to detect them has instead an efficiency which depends on the choice of the abelian projection, in a known and well understood way.Comment: Presented at the Conference QCD@WORK10, Martina Franca (Italy) 20-23 June 2010 to appear in the proceeding

Confinement of color: open problems and perspectives

Some basic features of confinement are reviewed, in particular the symmetry patterns of the dual dynamics. Open problems and possible directions of progress are discussed.Comment: 6 pages, 1 figure. Invited talk at PANIC 05 Santa Fe NM October 24-28 200

Understanding Color Confinement

An updated review is presented of our understanding of color confinement. Lattice results on condensation of magnetic charges are discussed. The role of vortices is analysed.Comment: 4 pages, 2 figures. Presented at Quark Matter 2001, Brookhaven 14-20 January 2001. To appear in the proceeding

Understanding Color Confinement

Some aspects are discussed of the mechanism of color confinement in QCD by condensation of magnetic monopoles in the vacuum.Comment: Presented at the Conference Windows on the Universe, Quy Nhon (Vietnam) Aug. 11-17 201