Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1996-08-27
Phys.Lett. B390 (1997) 268-274
Physics
High Energy Physics
High Energy Physics - Lattice
11 pages, LaTeX2e File, 3 Postscript figures
Scientific paper
10.1016/S0370-2693(96)01401-3
We analyze the latent heat and surface tension at the SU(3) deconfinement phase transition with tree level and tadpole improved Symanzik actions on lattices with temporal extent $N_\tau = 3$ and 4 and spatial extent $N_\sigma/ N_\tau = 4$, 6 and 8. In comparison to the standard Wilson action we do find a drastic reduction of cut-off effects already with tree level improved actions. On lattices with temporal extent $N_\tau=4$ results for the surface tension and latent heat obtained with a tree level improved action agree well with those obtained with a tadpole improved action. A comparison with $N_\tau=3$ calculations, however, shows that results obtained with tadpole action remain unaffected by cut-off effects even on this coarse lattice, while the tree level action becomes sensitive to the cut-off. For the surface tension and latent heat we find $\sigma_I/ T_c^3 = 0.0155~(16)$ and $\Delta\epsilon/T_c^4 = 1.40~(9)$, respectively.
Beinlich B.
Karsch Frithjof
Peikert A.
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