The 3d mixed BF Lagrangian 1-form: a variational formulation of Hitchin's integrable system

Vincent Caudrelier, Derek Harland, Anup Anand Singh +1

We introduce the concept of gauged Lagrangian $1$-forms, extending the notion of Lagrangian $1$-forms to the setting of gauge theories. This general formalism is applied to a natur…