منابع مشابه
The Quantum Superstring as a WZNW Model
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. The WZNW action reduces to our earlier free-field quantum action after a field redefinition, and to the GreenSchwarz classical action after constraining the current in Berkovits’ BRST charge to vanish. Physical states form the cohomology of a BRST ch...
متن کاملGauge connection between the WZNW system and 2D induced gravity
We introduce a consistent gauge extension of the SL(2, R) WZNW system, defined by a difference of two simple WZNW actions. By integrating out some dynamical variables in the functional integral, we show that the resulting effective theory coincides with the induced gravity in 2D. General solutions of both theories are found and related to each other. 1 Gauge extension of the WZNW system Dynamic...
متن کامل2D induced gravity from canonically gauged WZNW system
Starting from the Kac–Moody structure of the WZNW model for SL(2, R) and using the general canonical formalism, we formulate a gauge theory invariant under local SL(2, R)× SL(2, R) and diffeomorphisms. This theory represents a gauge extension of the WZNW system, defined by a difference of two simple WZNW actions. By performing a partial gauge fixing and integrating out some dynamical variables,...
متن کاملLectures on W - Gravity , W - Geometry and W - Strings ⋆
Classical W-gravities and the corresponding quantum theories are reviewed. W-gravities are higher-spin gauge theories in two dimensions whose gauge algebras are W-algebras. The geometrical structure of classical W-gravity is investigated, leading to surprising connections with self-dual and special geometry. The anomalies that arise in quantum W-gravity are discussed, with particular attention ...
متن کاملN = 2 Chiral Wznw Model in Superspace
We study the Poisson bracket algebra of the N = 2 supersymmetric chiral WZNW model in superspace. It involves two classical r-matrices, one of which comes from the geometrical constraints implied by N = 2 supersymmetry. The phase space itself consists of superfields satisfying constraints involving this r-matrix. An attempt is made to relax these constraints. The symmetries of the model are inv...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1992
ISSN: 0370-2693
DOI: 10.1016/0370-2693(92)91100-n