Instantons from over-improved cooling
High Energy Physics - Lattice
2008-11-26 v2 High Energy Physics - Theory
Abstract
Lattice artefacts are used, through modified lattice actions, as a tool to find the largest instantons in a toroidal geometry [0,L]^3X[0,T] for T to infinity. It is conjectured that the largest instanton is associated with tunnelling through a sphaleron. Existence of instantons with at least 8 parameters can be proven with the help of twisted boundary conditions in the time direction. Numerical results for SU(2) gauge theory obtained by cooling are presented to demonstrate the viability of the method.
Keywords
Cite
@article{arxiv.hep-lat/9309009,
title = {Instantons from over-improved cooling},
author = {Margarita Garcia Perez and Antonio Gonzalez-Arroyo and Jeroen Snippe and Pierre van Baal},
journal= {arXiv preprint arXiv:hep-lat/9309009},
year = {2008}
}
Comments
15p, 3 figs appended in PostScript (uudecoded), preprint INLO-PUB-11/93, FTUAM-93/31. Correction of eq.(16) and the discussion on pg.7