Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1997-09-26
Nucl.Phys.Proc.Suppl. 63 (1998) 543-545
Physics
High Energy Physics
High Energy Physics - Lattice
3 pages, Latex with espcrc2.sty, 5 Postscript figures, to appear in the proceedings of LATTICE'97, Edinburgh
Scientific paper
10.1016/S0920-5632(97)00828-1
The gluon excitations of the QCD vacuum are investigated in the presence of a static quark-antiquark source. It is shown that the ground state potential and the excitation spectrum of dynamical gluon degrees of freedom, as determined in our lattice simulations, agree remarkably well with model predictions based on the diaelectric properties of the confining vacuum described as a dual superconductor. The strong chromoelectric field of the static Q-Qbar source creates a bubble (bag) in the condensed phase where weakly interacting gluon modes can be excited. Some features and predictions of the bag model are presented and the chromoelectric vortex limit at large quark-antiquark separation (string formation) is briefly discussed.
Juge Keisuke Jimmy
Kuti Julius
Morningstar Colin J.
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