Quenched charmonium spectrum on anisotropic lattices
  We present the results of quenched charmonium spectrum for S- and P-states, obtained by a relativistic heavy quark method on anisotropic lattices. Simulations are carried out using the standard plaquette gauge action and a meanfield-improved clover quark action at $a_t^{-1} = 3$--6 GeV with the renormalized anisotropy fixed to $\xi \equiv a_s/a_t =3$. We study the scaling of our fine and hyperfine mass splittings, and compare with previous results. 
CP-PACS Collaboration : A. Ali Khan, S. Aoki, R. Burkhalter, S. Ejiri,   M. Fukugita, S. Hashimoto, N. Ishizuka, Y. Iwasaki,...