Lattice artefacts in SU(3) lattice gauge theory with a mixed fundamental and adjoint plaquette action

Details Lattice artefacts in SU(3) lattice gauge theory with a mixed fundamental and adjoint plaquette action Lattice artefacts in SU(3) lattice gauge theory with a mixed fundamental and adjoint plaquette action

2004-09-14

arxiv.org/abs/hep-lat/0409067v1

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at Lattice2004 (improved) Fermilab, June 21-26, 2004

Scientific paper

10.1016/j.nuclphysbps.2004.11.26

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.

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