Artigo
A new deformation of W-infinity and applications to the two-loop WZNW and conformal affine Toda models
Registro en:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 293, n. 1-2, p. 67-71, 1992.
0370-2693
10.1016/0370-2693(92)91481-N
WOS:A1992JU73200011
2-s2.0-13744264568
9287776078149551
8215976645016606
Autor
Aratyn, H.
Ferreira, L. A. [UNESP]
Gomes, J. F. [UNESP]
Zimerman, A. H. [UNESP]
Resumen
We construct a centerless W-infinity type of algebra in terms of a generator of a centerless Virasoro algebra and an abelian spin 1 current. This algebra conventionally emerges in the study of pseudo-differential operators on a circle or alternatively within KP hierarchy with Watanabe's bracket. Construction used here is based on a spherical deformation of the algebra W ∞ of area preserving diffeomorphisms of a 2-manifold. We show that this deformation technique applies to the two-loop WZNW and conformal affine Toda models, establishing henceforth W ∞ invariance of these models. Department of Physics University of Illinois at Chicago Box 4348, Chicago, IL 60680 Inst. de Fis. Teórica - UNESP, Rua Pamplona 145, 01405 São Paulo Inst. de Fis. Teórica - UNESP, Rua Pamplona 145, 01405 São Paulo