　　　　- Theory Seminar -

　　　　Date : 2007/6/22 (Fri.) 13:00 -
　　　　Place : RCNP 4F Lecture Room
　　　　Speaker : Prof. Yoshiaki Koma
　　　　　　　　　　　(Numazu College of Technology)

　　　　Title : Nonperturbative determination of the relativistic corrections
　　　　　　　　to the heavy quark potential

　　　　Abstract :
　　　　Heavy quarknia, bound states of a heavy quark and antiquark, offer
　　　　a unique opportunity to gain an understanding of nonperturbative QCD.
　　　　A possible way of studying such systems systematically in QCD is to
　　　　employ (potential) nonrelativistic QCD, which provides the static
　　　　inter-quark potential as the leading order contribution, followed by
　　　　relativistic corrections in powers of $1/m$ with quark mass $m$.
　　　　The various properties of heavy quarkonium can be extracted by solving
　　　　the Schroedinger equation with these potentials. We present our recent
　　　　numerical results of the relativistic corrections to the static potential
　　　　obtained by using lattice QCD Monte Carlo simulations, which include
　　　　the potential at $O(1/m)$ as well as the spin-dependent potentials
　　　　at $O(1/m^2)$.