Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2001-08-06
Nucl.Phys. B616 (2001) 163-214
Physics
High Energy Physics
High Energy Physics - Lattice
64 pages, 19 figures, LaTeX
Scientific paper
10.1016/S0550-3213(01)00458-8
We present a method for constructing classically perfect anisotropic actions for SU(3) gauge theory based on an isotropic Fixed Point Action. The action is parametrised using smeared (``fat'') links. The construction is done explicitly for anisotropy $\xi=a_s/a_t=2$ and 4. The corresponding renormalised anisotropies are determined using the torelon dispersion relation. The renormalisation of the anisotropy is small and the parametrisation describes the true action well. Quantities such as the static quark-antiquark potential, the critical temperature of the deconfining phase transition and the low-lying glueball spectrum are measured on lattices with anisotropy $\xi=2$. The mass of the scalar $0^{++}$ glueball is determined to be 1580(60) MeV, while the tensor $2^{++}$ glueball is at 2430(60) MeV.
Rufenacht Philipp
Wenger Urs
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