Séminaire de Physique Théorique

Theories of class S and line defects

par Prof. Michele CIRAFICI (Université de Lisbonne & IHÉS)

Europe/Paris
Amhithéâtre Léon Motchane (IHES)

Amhithéâtre Léon Motchane

IHES

IHES Le Bois Marie 35, route de Chartres 91440 Bures-sur-Yvette
Description
The goal of this talk is to discuss some properties of line defects in certain supersymmetric QFTs, the so-called theories of class S. I will spend some time reviewing some old work of Gaiotto Moore and Neitzke on the emergence of Hitchin systems in these theories, and on certain coordinates on the associated moduli spaces. Line defects can then be understood as certain functions on these moduli spaces. If there is time I will present new results. The tone of the discussion will be informal.
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