Contact: Christian Kaiser
In 2014 Gaiotto conjectured a correspondence between a holomorphic lagrangian (Hitchin section) in the Dolbeault moduli space of Higgs bundles on a curve and the holomorphic lagrangian of opers in the de Rham moduli space of holomorphic connections. This conjecture was established in 2016 for holomorphic opers with an arbitrary complex simple Lie group; the construction is known today as the conformal limit.
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/node/3444
[3] https://www.mpim-bonn.mpg.de/node/158