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

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

2004-05-16

arxiv.org/abs/hep-lat/0405012v2

JHEP 0408 (2004) 005

Physics

High Energy Physics

High Energy Physics - Lattice

36 pages, 12 figures

Scientific paper

10.1088/1126-6708/2004/08/005

We study the four-dimensional SU(3) gauge model with a fundamental and an adjoint plaquette term in the action. We investigate whether corrections to scaling can be reduced by using a negative value of the adjoint coupling. To this end, we have studied the finite temperature phase transition, the static potential and the mass of the 0^{++} glueball. In order to compute these quantities we have implemented variance reduced estimators that have been proposed recently. Corrections to scaling are analysed in dimensionless combinations such as T_c/\sqrt{\sigma} and m_{0^{++}}/T_c. We find 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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