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

M. Hasenbusch·S. Necco
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Abstract

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/\sqrtσ 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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M. Hasenbusch, S. Necco. 2004-05-31. SU(3) lattice gauge theory with a mixed fundamental and adjoint plaquette action: Lattice artefacts. https://doi.org/10.1088/1126-6708%2F2004%2F08%2F005

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