Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2004-08-09
Phys.Rev. D70 (2004) 074510
Physics
High Energy Physics
High Energy Physics - Lattice
14 pages
Scientific paper
10.1103/PhysRevD.70.074510
We study the scaling behavior of the step scaling function for SU(3) gauge theory, employing the renormalization-group improved Iwasaki gauge action and the perturbatively improved L\"uscher-Weisz gauge action. We confirm that the step scaling functions from the improved gauge actions agree with that previously obtained from the plaquette action within errors in the continuum limit at both weak and strong coupling regions. We also investigate how different choices of boundary counter terms for the improved gauge actions affect the scaling behavior. In the extrapolation to the continuum limit, we observe that the cut off dependence becomes moderate for the Iwasaki action, if a perturbative reduction of scaling violations is applied to the simulation results. We also measure the low energy scale ratio with the Iwasaki action, and confirm its universality.
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Aoki Sadao
Fukugita Masaaka
Ishikawa Kei-Ichi
Ishizuka Naruhito
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