M. Crivelli et al., GENERALIZED HYPERGEOMETRIC-FUNCTIONS ON THE TORUS AND THE ADJOINT REPRESENTATION OF UQ(SL2), Communications in Mathematical Physics, 154(1), 1993, pp. 1-23
We study the homology groups with coefficient in local systems arising
in the free field representation of minimal models of conformal field
theory on an elliptic curve with punctures. We define an action of th
e quantum enveloping algebra U(q)(sl2) on a space of relative cycles,
extending results obtained previously for the sphere. Absolute cycles
are identified with singular vectors. In the case of one puncture, we
find that the resulting topological representation is essentially the
adjoint representation.