Wznw Models from Non-standard Bilinear Forms
نویسندگان
چکیده
We study the WZNW models based on nonstandard bilinear forms. We approach the problem from algebraic, perturbative and functional exact methods. It is shown that even in the case of integer k we can find irrational CFT’s. We prove that when the base group is noncompact with nonabelian maximal compact subgroup, the KacMoody representations are nonunitary.
منابع مشابه
Chiral gauged WZNW models and heterotic string backgrounds
Konstadinos Sfetsos Physics Department, University of Southern California Los Angeles, CA 90089-0484, USA and Institute for Theoretical Physics, Utrecht University Princetonplein 5, TA 3508, The Netherlands and A.A. Tseytlin Theory Division, CERN CH-1211 Geneva 23, Switzerland and Blackett Laboratory, Imperial College London SW7 2BZ, U.K. Abstract We construct new heterotic string backgrounds w...
متن کاملNON-FRAGILE GUARANTEED COST CONTROL OF T-S FUZZY TIME-VARYING DELAY SYSTEMS WITH LOCAL BILINEAR MODELS
This paper focuses on the non-fragile guaranteed cost control problem for a class of T-S fuzzy time-varying delay systems with local bilinear models. The objective is to design a non-fragile guaranteed cost state feedback controller via the parallel distributed compensation (PDC) approach such that the closed-loop system is delay-dependent asymptotically stable and the closed-loop performance i...
متن کاملOn the Lagrangian Realization of the WZNW Reductions
We develop a phase space path-integral approach for deriving the Lagrangian realization of the models defined by Hamiltonian reduction of the WZNW theory. We illustrate the uses of the approach by applying it to the models of non-Abelian chiral bosons, W -algebras and the GKO coset construction, and show that the well-known Sonnenschein’s action, the generalized Toda action and the gauged WZNW ...
متن کاملA Duality-like Transformation in Wznw Models Inspired from Dual Riemannian Globally Symmetric Spaces
We investigate transformations on the group manifold element and gauged elds on two diierent kinds of gauged WZNW models and in this way obtain a duality-like transformation between chiral and vector gauged WZNW models with null gauged subgroups, that exactly converts the chiral gauged WZNW action to vector gauged WZNW action and vice versa. These duality-like transformations correspond to the ...
متن کاملCausal Poisson Brackets of the SL(2,R) WZNW Model and its Coset Theories
From the basic chiral and anti-chiral Poisson bracket algebra of the SL(2, R) WZNW model, non-equal time Poisson brackets are derived. Through Hamiltonian reduction we deduce the corresponding brackets for its coset theories. The analysis of WZNWmodels is usually reduced to a separate treatment of its chiral or anti-chiral components [1, 2, 3]. But much simpler results can arise when the contri...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1996