Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-10-28
Nucl.Phys.Proc.Suppl. 94 (2001) 640-643
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice 2000 (Improvement and Renormalisation), 4 pages, 9 eps-figures, Latex
Scientific paper
10.1016/S0920-5632(01)00992-6
On anisotropic lattices, where generally the lattice is rather coarse in spatial directions, a parametrized classically perfect action could help reducing lattice artifacts considerably. We investigate the possibility of constructing such actions for SU(3) gauge theory. We present two different methods to do so, either repeating the procedure used to create our newly parametrized isotropic FP action, or performing one single step starting with the isotropic result. The anisotropic action is parametrized using an ansatz including anisotropically APE-like smeared (``fat'') links. The parametrized classically perfect action with anisotropy $\xi=a_s/a_t=2$ is constructed and the renormalized anisotropy is measured using the torelon dispersion relation. It turns out that the renormalization is small.
Rufenacht Philipp
Wenger Urs
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