منابع مشابه
Gauging a Non-semi-simple Wzw Model
We consider gauged WZWmodels based on a four dimensional non-semi-simple group. We obtain conformal σ-models in D = 3 spacetime dimensions (with exact central charge c = 3) by axially and vectorially gauging a one-dimensional subgroup. The model obtained in the axial gauging is related to the 3D black string after a correlated limit is taken in the latter model. By identifying the CFT correspon...
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We consider the standard vector gauging of Lorentz group SO(3, 1) WZWmodel by its non-semisimple null Euclidean subgroup in two dimensions E(2). The resultant effective action of the theory is seen to describe a one dimensional bosonic field in the presence of external charge that we interpret it as a Liouville field. Gauging a boosted SO(3) subgroup, we find that in the limit of the large boos...
متن کاملExact String Backgrounds from Wzw Models Based on Non-semi-simple Groups
We formulate WZW models based on a centrally extended version of the Euclidean group in d-dimensions. We obtain string backgrounds corresponding to conformal σ-models in D = d space-time dimensions with exact central charge c = d and d(d − 1)/2 null Killing vectors. By identifying the corresponding conformal field theory we show that the one loop results coincide with the exact ones up to a shi...
متن کاملGauging non-Hermitian Hamiltonians
We address the problem of coupling non-Hermitian systems, treated as fundamental rather than effective theories, to the electromagnetic field. In such theories the observables are not the x and p appearing in the Hamiltonian, but quantities X and P constructed by means of the metric operator. Following the analogous procedure of gauging a global symmetry in Hermitian quantum mechanics we find t...
متن کاملD-Branes on a gauged WZW model
The algebraic classification of Cardy for boundary states on a G/H coset CFT of a compact group G, is geometrically realized on the corresponding manifold resulting from gauging the WZW model. The branes consist of H orbits of quantized G conjugacy classes shifted by quantized H conjugacy classes.
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1994
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)90203-8