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VOLUME 82 | ISSUE 9 | PAGE 633
QCD string and the Lorentz nature of confinement
A. V. Nefediev, Yu. A. Simonov
Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia

PACS: 12.38.Aw, 12.39.-x
Abstract
We address the question of the Lorentz nature of the effective long-range interquark interaction generated by the QCD string with quarks at the ends. Studying the Dyson-Schwinger equation for a heavy-light quark-antiquark system, we demonstrate explicitly how a Lorentz-scalar interaction appears in the Diraclike equation for the light quark, as a consequence of chiral symmetry breaking. We argue that the effective interquark interaction in the Hamiltonian of the QCD string with quarks at the ends stems from this effective scalar interaction.


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