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BIRS Workshop Lecture Videos

Modular tensor categories from wild Higgs bundles Pei, Du


We propose a new link between quantum invariants of 3-manifolds and the geometry of wild Hitchin moduli spaces. The construction goes through a class of four-dimensional quantum field theories known as Argyres-Douglas theories. Every such theory realizes a wild Hitchin space as its Coulomb branch and defines a VOA on the Higgs branch. The latter can be used to construct a non-unitary modular tensor category, which leads to 3d TQFTs that are generically semisimple but non-unitary. This is based on joint work with Mykola Dedushenko, Sergei Gukov, Hiraku Nakajima and Ke Ye.

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