Quark-anti-quark potentials from Nambu-Bethe-Salpeter amplitudes on lattice

Details Quark-anti-quark potentials from Nambu-Bethe-Salpeter amplitudes on lattice Quark-anti-quark potentials from Nambu-Bethe-Salpeter amplitudes on lattice

2011-02-10

arxiv.org/abs/1102.2097v2

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 9 figues

Scientific paper

Quark--anti-quark (anti-q-q) potentials with finite quark masses are studied from the anti-q-q Nambu-Bethe-Salpeter (NBS) wave functions in quenched lattice QCD. With the use of a method which has been recently developed in the derivation of nuclear forces from lattice QCD, we derive the anti-q-q potentials from the NBS wave functions. We calculate the anti-q-q NBS wave functions in pseudo-scalar and vector channels for several quark masses. The derived potentials at each quark mass in both channels show linear plus Coulomb form. We also discuss the quark-mass and channel dependence of the anti-q-q potentials.

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