A Monte Carlo study of old, new and tadpole improved actions

Details A Monte Carlo study of old, new and tadpole improved actions A Monte Carlo study of old, new and tadpole improved actions

1996-08-08

arxiv.org/abs/hep-lat/9608036v1

Phys.Lett.B389:112-118,1996

Physics

High Energy Physics

High Energy Physics - Lattice

12 pages, including 2 tables and 2 figures, latex

Scientific paper

10.1016/S0370-2693(96)01285-3

Scaling of mass ratios in intermediate volumes, obtained with improved SU(2) lattice actions is tested against analytic results for the Wilson and continuum action. A new improved action is introduced by adding a 2X2 plaquette to the Symanzik action. Completing a square leads to a covariant propagator that simplifies perturbative calculations. Data is presented on lattices of size 4**3X128, with lattice spacings of approximately 0.02 and 0.12 fermi. For the latter case no further improvement as compared to the tree-level action was observed when including the Lepage-Mackenzie tadpole correction to the one-loop improved Luscher-Weisz Symanzik action.

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