S. Groote et J. Shigemitsu, One-loop self-energy and renormalization of the speed of light for some anisotropic improved quark actions - art. no. 014508, PHYS REV D, 6201(1), 2000, pp. 4508
One-loop corrections to the fermion rest mass M-1, wave function renormaliz
ation Z(2) and speed of light renormalization C-0 are presented for lattice
actions that combine improved glue with clover or D234 quark actions and k
eep the temporal and spatial lattice spacings, a(t) and a(s), distinct. We
explore a range of values for the anisotropy parameter chi = a(s)/a(t) and
treat both massive and massless fermions.