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W-Geometries | | Jean-Loup Gervais
; Yutaka Matsuo
; | | Date: |
11 Oct 1991 | | Journal: | Phys. Lett. B274 (1992) 309 | | Subject: | hep-th | | Abstract: | It is shown that, classically, the W-algebras are directly related to the extrinsic geometry of the embedding of two-dimensional manifolds with chiral parametrisation (W-surfaces) into higher dimensional Kähler manifolds. We study the local and the global geometries of such embeddings, and connect them to Toda equations. The additional variables of the related KP hierarchy are shown to yield a specific coordinate system of the target-manifold, and this allows us to prove that W-transformations are simply particular diffeomorphisms of this target space. The W-surfaces are shown to be instantons of the corresponding non-linear $sigma$-models. | | Source: | arXiv, hep-th/9110028 | | Services: | Forum | Review | PDF | Favorites | |
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