Interquark potential with finite quark mass from lattice QCD

Understand

We present an investigation of the interquark potential determined from the qq^bar Bethe-Salpeter (BS) amplitude for heavy quarkonia in lattice QCD.

• The qq^bar potential at finite quark mass m_q can be calculated from the equal-time and Coulomb gauge BS amplitude through the effective Schr\"odinger equation.
• The definition of the potential itself requires information about a kinetic mass of the quark.
• We then propose a self-consistent determination of the quark kinetic mass on the same footing.