The quantum superstring as a WZNW model with N=2 superconformal symmetry

P. A. Grassi, G. Policastro, P. van Nieuwenhuizen

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

We present a new development in our approach to the covariant quantization of superstrings in 10 dimensions which is based on a gauged WZNW model. To incorporate worldsheet diffeomorphisms we need the quartet of ghosts (bzz,cz, βzz, γz) for topological gravity. The currents of this combined system form an N=2 superconformal algebra. The model has vanishing central charge and contains two anticommuting BRST charges, QS=QW+∮γ zbzz and QV=∮cz (TWzz+ (1/2)Ttopzz)+γ z(BW zz+(1/2)Btop zz-(1/2)cz Fzzz-(1/4)γ zΦzzz). Physical states form the cohomology of QS+QV+∮η z, where ηz is obtained by the usual fermionization of βzzz, have non-negative grading, and are annihilated by b0 and β0. We no longer introduce any ghosts by hand, and the formalism is completely Lorentz covariant.

Lingua originaleInglese
pagine (da-a)43-63
Numero di pagine21
RivistaNuclear Physics B
Volume676
Numero di pubblicazione1-2
DOI
Stato di pubblicazionePubblicato - 5 gen 2004
Pubblicato esternamente

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