QCD on Coarse Lattices
High Energy Physics - Lattice
2009-10-28 v1
Abstract
We show that the perturbatively-improved gluon action for QCD, once it is tadpole-improved, gives accurate results even with lattice spacings as large as 0.4~fm. {\em No\/} tuning of the couplings is required. Using this action and lattice spacing, we obtain a static potential that is rotationally invariant to within a few percent, the spin-averaged charmonium spectrum accurate to within 30--40~MeV, and scaling to within 5--10\%. We demonstrate that simulations on coarse lattices are several orders of magnitude less costly than simulations using current methods.
Cite
@article{arxiv.hep-lat/9412035,
title = {QCD on Coarse Lattices},
author = {M. Alford and W. Dimm and G. Hockney and P. Lepage and P. Mackenzie},
journal= {arXiv preprint arXiv:hep-lat/9412035},
year = {2009}
}
Comments
4 pages