Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-01-23
JHEP 0406:058,2004
Physics
High Energy Physics
High Energy Physics - Theory
44 pages, no figures, discussion of relation to canonical deformations and vertex operators added, typos corrected
Scientific paper
10.1088/1126-6708/2004/06/058
Motivated by the representation of the super Virasoro constraints as generalized Dirac-K{\"a}hler constraints $(d \pm d^\dagger)|\psi> = 0$ on loop space, examples of the most general continuous deformations $d \to e^{-W} d e^W$ are considered which preserve the superconformal algebra at the level of Poisson brackets. The deformations which induce the massless NS and NS-NS backgrounds are exhibited. Hints for a manifest realization of S-duality in terms of an algebra isomorphism are discussed. It is shown how the first order theory of 'canonical deformations' is reproduced and how the deformation operator $W$ encodes vertex operators and gauge transformations.
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