BRST symmetry for finite-dimensional invariances: Applications to global zero modes in string theory
Abstract
We show that the BRST formalism which is commonly used for infinite-dimensional gauge symmetries is also of interest in the case of continuous finite-dimensional symmetries stemming from global properties. We give as examples the simple case of a massless field on a finite-volume space and the less trivial one of the ghost lagrangian in string theory. In the latter case, we obtain an alternative way to derive the integration measure on moduli space. We also exhibit the BRST type invariance which is hidden in the collective coordinate method.
- Publication:
-
Physics Letters B
- Pub Date:
- February 1988
- DOI:
- 10.1016/0370-2693(88)90855-6
- Bibcode:
- 1988PhLB..202...67B