A Derivation of the BRST Operator for Non-Critical W-Strings

Details A Derivation of the BRST Operator for Non-Critical W-Strings A Derivation of the BRST Operator for Non-Critical W-Strings

1992-09-11

arxiv.org/abs/hep-th/9209037v1

Phys.Lett. B296 (1992) 95-103

Physics

High Energy Physics

High Energy Physics - Theory

TEX file, pp14, UG-8/92, CERN-TH.6647/92,LBL-32806

Scientific paper

10.1016/0370-2693(92)90808-H

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.

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