Nonstandard Cutoff Effects in the Nonlinear Sigma Model
High Energy Physics - Lattice
2015-06-25 v1
Abstract
High precision measurements of the renormalized zero-momentum 4-point coupling g_R and of the Luscher-Weisz-Wolff running coupling gbar(L) = L*m(L) performed with two different lattice actions in the non-perturbative region confirm the earlier observations, that the cutoff effects look linear, in contrast to perturbative considerations. The use of different actions allows one to make a more reliable estimate on the continuum limit. The measurements were done for infinite volume correlation length up to 350.
Cite
@article{arxiv.hep-lat/0110202,
title = {Nonstandard Cutoff Effects in the Nonlinear Sigma Model},
author = {Martin Hasenbusch and Peter Hasenfratz and Ferenc Niedermayer and Bernhard Seefeld and Ulli Wolff},
journal= {arXiv preprint arXiv:hep-lat/0110202},
year = {2015}
}
Comments
3 pages, 2 figures, Lattice2001(spin)