Lattice artefacts in SU(3) lattice gauge theory with a mixed fundamental and adjoint plaquette action
arXiv:hep-lat/0409067 · doi:10.1016/j.nuclphysbps.2004.11.262
Abstract
We investigated SU(3) lattice gauge theory with a fundamental and adjoint plaquette term in the action. The purpose is to test whether the choice of a negative adjoint coupling can reduce lattice artefacts and improve the scaling b ehaviour. To this end, we have studied the finite temperature phase transition, the static potential and the mass of the 0^{++} glueball. We found that indeed the lattice artefacts in e.g. m_{0^{++}}/T_c can be reduced considerably compared with the pure Wilson (fundamental) gauge action at the same lattice spacing.
Talk presented at Lattice2004 (improved) Fermilab, June 21-26, 2004