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arXiv · hep-lat/9608036

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

Margarita Garcia Perez·Jeroen Snippe·Pierre van Baal
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Abstract

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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Margarita Garcia Perez, Jeroen Snippe, Pierre van Baal. 1996-08-08. A Monte Carlo study of old, new and tadpole improved actions. https://doi.org/10.1016/s0370-2693(96)01285-3

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