QCD string and the Lorentz nature of confinement

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.

LaTeX2e, 5 pages, uses jetpl.cls (included), to appear in JETP Lett

References in corpus (3)

• Confinement and parity doubling in heavy-light mesons
• Reduction of the QCD string to a time component vector potential
• Direct experimental test of scalar confinement

Cited by in corpus (7)

• The quark-gluon vertex in Landau gauge QCD: Its role in dynamical chiral symmetry breaking and quark confinement
• Field Correlator Method for the confinement in QCD
• On Goldstone bosons decoupling from high-lying hadrons
• Relativistic two-body equation based on the extension of the SL(2,C) group
• Chiral symmetry breaking and the Lorentz nature of confinement
• Quark models: What can they teach us?
• Chiral symmetry breaking in confining theories and asymptotic limits of operator product expansion