  The string tensions for fundamental and a variety of representations:
adjoint, 6, 10, 15-symmetric, 15-antisymmetric, and 27 have been measured in
pure gauge SU(3). The calculations have been done on anisotropic lattices,
using an $O(a^2)$ tadpole improved action. A range of lattice spacings and
lattice sizes has been used to control finite volume and finite lattice spacing
effects. Potentials between quarks in various representations have also been
calculated with the fat center vortices model. At intermediate distances, the
results show approximate Casimir scaling. From my lattice calculations, no
color screening has been observed so far, even for distances as large as about
2.5 fm.
