Lotte Hollands (Heriot-Watt University) “Opers, spectral networks and the T[3] theory”

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In this seminar I will explain how certain partition functions of four-dimensional quantum field theories, such as the non-Lagrangian T[3] theory, have a geometric interpretation as generating functions of so-called opers. This will reveal close ties to spectral networks and the exact WKB method. (This is joint work with Andy Neitzke.)