Composite operators from the operator product expansion: what can go wrong?
High Energy Physics - Lattice
2015-06-25 v1
Abstract
The operator product expansion is used to compute the matrix elements of composite renormalized operators on the lattice. We study the product of two fundamental fields in the two-dimensional sigma-model and discuss the possible sources of systematic errors. The key problem turns out to be the violation of asymptotic scaling.
Cite
@article{arxiv.hep-lat/9909105,
title = {Composite operators from the operator product expansion: what can go wrong?},
author = {Sergio Caracciolo and Andrea Montanari and Andrea Pelissetto},
journal= {arXiv preprint arXiv:hep-lat/9909105},
year = {2015}
}
Comments
Lattice 99 (Improvement and Renormalization), 3 pages, 3 eps figures