Cutoff effects in the O(N) sigma model at large N

Details Cutoff effects in the O(N) sigma model at large N Cutoff effects in the O(N) sigma model at large N

2005-09-14

arxiv.org/abs/hep-lat/0509043v1

PoS LAT2005 (2005) 253

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 2 figures, contribution of U.W. to Lat05, Dublin

Scientific paper

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.

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