A Monte Carlo study of old, new and tadpole improved actions
High Energy Physics - Lattice
2008-11-26 v1
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.
Keywords
Cite
@article{arxiv.hep-lat/9608036,
title = {A Monte Carlo study of old, new and tadpole improved actions},
author = {Margarita Garcia Perez and Jeroen Snippe and Pierre van Baal},
journal= {arXiv preprint arXiv:hep-lat/9608036},
year = {2008}
}
Comments
12 pages, including 2 tables and 2 figures, latex