A Derivation of the BRST Operator for Non-Critical W-Strings
High Energy Physics - Theory
2009-10-22 v1
Abstract
We derive the recently proposed BRST charge for non-critical W strings from a Lagragian approach. The basic observation is that, despite appearances, the combination of two classical ``matter'' and ``Toda'' w_3 systems leads to a closed modified gauge algebra, which is of the so-called soft type. Based on these observations, a novel way to construct critical W_3 strings is given.
Cite
@article{arxiv.hep-th/9209037,
title = {A Derivation of the BRST Operator for Non-Critical W-Strings},
author = {E. Bergshoeff and A. Sevrin and X. Shen},
journal= {arXiv preprint arXiv:hep-th/9209037},
year = {2009}
}
Comments
TEX file, pp14, UG-8/92, CERN-TH.6647/92,LBL-32806