Logarithmic intertwining operators and the space of conformal blocks over the projective line
arXiv:1103.3834 · doi:10.1007/s11005-012-0546-9
Abstract
We show that the space of logarithmic intertwining operators among logarithmic modules for a vertex operator algebra is isomorphic to the space of 3-point conformal blocks over the projective line. This is considered as a generalization of Zhu's result for ordinary intertwining operators among ordinary modules.
15 pages