Simple Properties: structure of the actionWe postulate the action of the form: (1) This is almost a generic sigma-model, but we require:Classical 2d conformal invarianceLagrangian is polynomial in and Two separate conserved ghost number charges: left ghost charge for right ghost charge for and the most important postulate is about: BRST structure ☞

Simple Properties: structure of the action

We postulate the action of the form:

Classical 2d conformal invariance

Lagrangian is polynomial in and

left ghost charge for

right ghost charge for

and the most important postulate is about:

BRST structure

☞