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Long-distance color-dependent quark potentials in the Coulomb gauge QCD

Presenter: Takuya Saito — Kochi University

Y. Nakagawa, A. Nakamura, T. Saito, H. Toki

We report the study of the long-distance color-dependent potentials between two quarks by the quenched lattice QCD simulation with the Coulomb gauge fixing. This formulation enables us to define the color-Coulomb instantaneous and the vacuum polarization terms separately. Numerical simulation shows that the color-singlet and color-antitriplet instantaneous potentials yield the attractive confining forces at large distances. We also address the divergence problem of the color-non-singlet channels in the infinity volume limit.