Affiliation:
1. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
Abstract
Within the framework of a local expansion of the logarithm of the O (N)σ-model vacuum functional, valid for slowly varying fields, the modified Virasoro algebra is studied. The operatorlike central charge term is given, up to second order, for a general functional.
Publisher
World Scientific Pub Co Pte Lt
Subject
Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics