Hecke modifications of conformal blocks outside the critical level
Representation Theory
2025-10-30 v2 Mathematical Physics
Algebraic Geometry
math.MP
Abstract
We define Hecke modifications of conformal blocks over affine Lie algebras at non-critical level by using the Hecke modifications of the underlying -bundles. We show that this procedure is equivalent to the insertion of a twisted vacuum module at an additional marked point and provide an explicit description using coordinate transformations.
Cite
@article{arxiv.2509.02368,
title = {Hecke modifications of conformal blocks outside the critical level},
author = {Raschid Abedin and Giovanni Felder and Robert Windesheim},
journal= {arXiv preprint arXiv:2509.02368},
year = {2025}
}