Problems with vector confinement in 4d QCD
Yu. A. Simonov
State Research Center Institute of Theoretical and Experimental Physics
117218 Moscow, Russia
Abstract
It is shown that vector confinement does not support bound
state spectrum in the 4d Dirac equation. The same property is confirmed
in the heavy-light and light-light QCD systems. This situation is
compared with the confinement in the 2d system, which is generated by
the gluon exchange. Considering the existing theories of confinement,
it is shown that both the field correlator approach and the dual
superconductor model ensure the scalar confinement in contrast to the
Gribov-Zwanziger model, where the
confning Coulomb potential does not support bound states in the Dirac equation.