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Composite operators from the operator product expansion: what can go wrong?

Authors
  • Caracciolo, Sergio
  • Montanari, Andrea
  • Pelissetto, Andrea
Type
Published Article
Publication Date
Sep 13, 1999
Submission Date
Sep 13, 1999
Identifiers
DOI: 10.1016/S0920-5632(00)91831-0
arXiv ID: hep-lat/9909105
Source
arXiv
License
Unknown
External links

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.

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