Who Confines Quarks On NonAbelian Monopoles and Dynamics of Confinement.pdf

WHO CONFINES QUARKS? 3 - ON NON-ABELIAN MONOPOLES AND 0 DYNAMICS OF CONFINEMENT 0 2 r p K. KONISHI A Dipartimento di Fisica,“E. Fermi” 7 Universit`a di Pisa, 1 Via Buonarroti, 2, Ed. C 56127 Pisa, Italy 1 E-mail: konishi@df.unipi.it v 7 5 The role non-Abelian magnetic monopoles play in the dynamics of confinement is 1 discussed by examining carefully a class of supersymmetric gauge theories as the- 4 oretical laboratories. In particular, in the so-called r-vacua of softly broken N = 2 supersymmmetric SU (n ) QCD, the Goddard-Olive-Nuyts-Weinberg monopoles 0 c 3 appear as the dominant low-energy effective degrees of freedom. Even more in- 0 teresting is the physics of confining vacua which are deformations of nontrivial / superconformal theories. We argue that in such cases, occurring in the r = nf h 2 vacua of SU (n ) theories or in all of confining vacua of USp(2n ) or SO(n ) the- t c c f - ories with massless flavors, a new mechanism of confinement involving strongly p interactin