BRST cohomology ring in 2D gravity coupled to minimal models
نویسنده
چکیده
The ring structure of Lian-Zuckerman states for (q, p) minimal models coupled to gravity is shown to beR = R0⊗C[w,w] where R0 is the ring of ghost number zero operators generated by two elements and w is an operator of ghost number −1. Some examples are discussed in detail. For these models the currents are also discussed and their algebra is shown to contain the Virasoro algebra. † Address after July 1992: DAMTP, Univ. of Cambridge.
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