Speaker
Description
While the crucial role of gauge topology was recognized from 1970’s,
confinement was associated with monopoles and chiral symmetry breaking with instantons.
Recognizing presence of non-zero holonomy, van Baal and others discovered
splitting of the instantons into their constituents — the instanton-dyons.
Several groups now work out properties of their ensembles, which generate
both
the deconfinement and chiral phase transitions in QCD-like theories.
Introducing variable phases for quark periodicity conditions — known as flavor holonomies — one can switch fermion coupling to different dyons, and thus dramatically
change both the order and temperature of both transitions. First lattice studies of
modified — so called $Z_N$-symmetric QCD — have also found these effects.
