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Boundary Rings and N=2 Coset Models | | W. Lerche
; J. Walcher
; | | Date: |
13 Nov 2000 | | Journal: | Nucl.Phys. B625 (2002) 97-127 | | Subject: | hep-th | | Abstract: | We investigate boundary states of N=2 coset models based on Grassmannians Gr(n,n+k), and find that the underlying intersection geometry is given by the fusion ring of U(n). This is isomorphic to the quantum cohomology ring of Gr(n,n+k+1), and thus can be encoded in a ``boundary’’ superpotential whose critical points correspond to the boundary states. In this way the intersection properties can be represented in terms of a soliton graph that forms a generalized, Z_{n+k+1} symmetric McKay quiver. We investigate the spectrum of bound states and find that the rational boundary CFT produces only a small subset of the possible quiver representations. | | Source: | arXiv, hep-th/0011107 | | Services: | Forum | Review | PDF | Favorites | |
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