Improved actions and asymptotic scaling in lattice Yang-Mills theory

Understand

Improved actions in SU(2) and SU(3) lattice gauge theories are investigated with an emphasis on asymptotic scaling.

• A new scheme for tadpole improvement is proposed.
• The standard but heuristic tadpole improvement emerges from a mean field approximation from the new approach.
• Scaling is investigated by means of the large distance static quark potential.