2005/12/28 by A. Nakamura, T. Saito · 1 citation
Physics and Astronomy · #hep-lat #hep-ph
paper · pdf · doi:10.1016/j.physletb.2005.06.053
published as Phys.Lett. B621 (2005) 171-175
arxiv created 2005/12/28 · arxiv updated 2009/12/01
We study the QCD color interactions between static two heavy quarks at zero temperature in a quenched SU(3) lattice gauge simulation: in addition to the standard singlet qq potentials, we calculate octet qq potentials, symmetric and antisymmetric qq potentials. It is shown that the antisymmetric qq channel behaves as a linearly rising potential at large quark separations. We further find that the qq octet and qq symmetric channels have the complex dependence on the distance; at short distances they are repulsive forces, while at large distances, they show linearly rising feature. Ratio of string tensions between qq singlet and qq antisymmetric potentials is described in terms of the Casimir factor.