Improved actions for the two-dimensional sigma-model
高能物理 - 格点
2009-10-30 v1
摘要
For the O(N) sigma-model we studied the improvement program for actions with two- and four-spin interactions. An interesting example is an action which is reflection-positive, on-shell improved, and has all the coupling defined on an elementary plaquette. We show the large N solution and preliminary Monte Carlo results for N=3.
引用
@article{arxiv.hep-lat/9710096,
title = {Improved actions for the two-dimensional sigma-model},
author = {Sergio Caracciolo and Andrea Montanari and Andrea Pelissetto},
journal= {arXiv preprint arXiv:hep-lat/9710096},
year = {2009}
}
备注
Talk presented at Lattice '97 (Improvement and Renormalisation), Edinburgh (UK), July 1997. LaTeX2e, 3 pages, 2 figures, uses espcrc2 and epsfig