Signature Characters for the Virasoro Algebra
arXiv:hep-th/9204081 · doi:10.1016/0370-2693(91)90177-R
Abstract
The number of ghost states at each energy level in a non-unitary conformal field theory is encoded in the signature characters of the relevant Virasoro algebra highest weight representations. We give expressions for these signature characters. These results complete Friedan-Qiu-Shenker's analysis of the Virasoro algebra's highest weight representations.
9 pp. (Tex instructions corrected.)