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Physical States in Topological Coset Models | | J. Sonnenschein
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8 Oct 1992 | | Subject: | hep-th | | Abstract: | Recent results about topological coset models are summarized. The action of a topological ${Gover H}$ coset model ($rank H = rank G$) is written down as a sum of ``decoupled" matter, gauge and ghost sectors. The physical states are in the cohomology of a BRST-like operator that relates these secotrs. The cohomology on a free field Fock space as well as on an irreducible representation of the ``matter" Kac-Moody algebra are extracted. We compare the results with those of $(p,q)$ minimal models coupled to gravity and with $(p,q)$ $W_N$ strings for the case of $A_1^{(1)}$ at level $k={pover q}-2$ and $A_1^{(N-1)}$ at level $k={pover q}-N$ respectively. | | Source: | arXiv, hep-th/9210041 | | Services: | Forum | Review | PDF | Favorites | |
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