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24 April 2024

» arxiv » hep-lat/0509043

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Cutoff effects in the O(N) sigma model at large N
Ulli Wolff ; Francesco Knechtli ; Bjoern Leder ; Janos Balog ;
Date:	14 Sep 2005
Subject:	hep-lat
Abstract:	The computation of the step scaling function for the finite size mass-gap in the O(N) sigma model at large N is reviewed. Practically exact nonperturbative results become available for both finite and vanishing lattice spacing. We use them as a testbed to investigate standard procedures of continuum extrapolation in lattice field theory.
Source:	arXiv, hep-lat/0509043
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