Hamiltonian Reduction of Supersymmetric WZNW Models on Bosonic Groups and Superstrings

Abstract

It is shown that an alternative supersymmetric version of the Liouville equation extracted from D=3 Green-Schwarz superstring equations naturally arises as a super-Toda model obtained from a properly constrained supersymmetric WZNW theory based on the $sl(2,R)$ algebra. Hamiltonian reduction is performed by imposing a nonlinear superfield constraint which turns out to be a mixture of a first- and second-class constraint on supercurrent components. Supersymmetry of the model is realized nonlinearly and is spontaneously broken. The set of independent current fields which survive the Hamiltonian reduction contains (in the holomorphic sector) one bosonic current of spin 2 (the stress--tensor of the spin 0 Liouville mode) and two fermionic fields of spin $3/2$ and $-1/2$. The $n=1$ superconformal system thus obtained is of the same kind as one describing noncritical fermionic strings in a universal string theory. The generalization of this procedure allows one to produce from any bosonic Lie algebra super--Toda models and associated super-W algebras together with their nonstandard realizations.

LaTeX file, 32 pages, final version to appear in Nucl. Phys. B

References in corpus (18)

• N=4 Topological Strings
• SUPERSTRINGS AND SUPERMEMBRANES IN THE DOUBLY SUPERSYMMETRIC GEOMETRICAL APPROACH
• Covariant Quantization of the Green-Schwarz Superstring in a Calabi-Yau Background
• On the Uniqueness of String Theory
• Irrational Conformal Field Theory
• ON THE GENERALIZED ACTION PRINCIPLE FOR SUPERSTRINGS AND SUPERMEMBRANES
• Ghost-Free Spectrum of a Quantum String in SL(2,R) Curved Spacetime
• Sinh-Gordon, Cosh-Gordon and Liouville Equations for Strings and Multi-Strings in Constant Curvature Spacetimes
• Exact four dimensional string solutions and Toda-like sigma models from `null-gauged' WZNW theories
• Seven-Sphere and the Exceptional N=7 and N=8 Superconformal Algebras
• Toward the Universal Theory of Strings
• A Locally Supersymmetric Action for the Bosonic String
• N=1,2 Super-NLS Hierarchies as Super-KP Coset Reductions
• New supersymmetric generalization of the Liouville equation
• Universal aspects of string propagation on curved backgrounds
• Embeddings for Non-Critical Superstrings
• Generalized NLS Hierarchies from Rational $W$ Algebras
• On the Relation of Four-Dimensional N=2,4 -- Supersymmetric String Backgrounds to Integrable Models

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