Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-07-06
Nucl.Phys. B597 (2001) 413-450
Physics
High Energy Physics
High Energy Physics - Lattice
45 pages, 12 figures, Latex
Scientific paper
10.1016/S0550-3213(00)00731-8
A new parametrization is introduced for the fixed point (FP) action in SU(3) gauge theory using fat links. We investigate its scaling properties by means of the static quark-antiquark potential and the dimensionless quantities $r_0 T_c, T_c/\sqrt{\sigma}$ and $r_0 \sqrt{\sigma}$, where $T_c$ is the critical temperature of the deconfining phase transition, $r_0$ is the hadronic scale and $\sigma$ is the effective string tension. These quantities scale even on lattices as coarse as $a \approx 0.3$ fm. We also measure the glueball spectrum and obtain $m_{0^{++}}=1627(83)$ MeV and $m_{2^{++}}=2354(95)$ MeV for the masses of the scalar and tensor glueballs, respectively.
Niedermayer Ferenc
Rufenacht Philipp
Wenger Urs
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