Non-Critical String Models as Topological Coset models

Details Non-Critical String Models as Topological Coset models Non-Critical String Models as Topological Coset models

1993-10-14

arxiv.org/abs/hep-th/9310077v1

Physics

High Energy Physics

High Energy Physics - Theory

18 pages

Scientific paper

The topological coset model appraoch to non-critical string models is summarized. The action of a topological twisted ${G\over H}$ coset model ($rank\ H = rank\ G$) is written down. A ``topological coset algebra" is derived and compared with the algebraic structure of the $N=2$ twisted models. The cohomology on a free field Fock space as well as on the space of irreducible representation of the ``matter" \ala are extracted. We compare the results of the $A_1^{(N-1)}$ at level $k={p\over q}-N$ with those of $(p,q)$ $W_N$ strings. A ${SL(2,R)\over SL(2,R)}$ model which corresponds to the $c=1$ is written down. A similarity transformation on the BRST charge enables us to extract the full BRST cohomoloy. One to one correspondence between the physical states of the $c=1$ and the corresponding coset model is found. Talk presented at ``Strings' 93", May 93 Berekely.}

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