The line bundles on the moduli stack of principal bundles on families of curves
arXiv:2401.02204 · doi:10.1017/S0013091524000622
Abstract
Given a connected reductive algebraic group G, we investigate the Picard group of the moduli stack of principal G-bundles over an arbitrary family of smooth curves.
35 pages. Final version, to appear on Proceedings of the Edinburgh Mathematical Society