Virasoro Algebra and O(N) Sigma Model

Abstract

Within the framework of a local expansion of the logarithm of the O(N) sigma-model vacuum functional, valid for slowly varying fields, the modified Virasoro algebra is studied. The operator-like central charge term is given, up to second order, for a general functional.

13 pages, REVTEX, no figures

References in corpus (3)

• The Vacuum Functional at Large Distances
• The O(N) sigma-model Laplacian
• Second Order Calculations of the O(N) sigma-Model Laplacian