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Statut |
Confirmé |
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Série |
SEM-DARBOUX |
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Domaines |
hep-th |
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Date |
Jeudi 16 Mai 2019 |
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Heure |
11:00 |
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Institut |
LPTHE |
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Salle |
bibliothèque du LPTHE, tour 13-14, 4eme étage |
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Nom de l'orateur |
Soibelman |
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Prenom de l'orateur |
Yan |
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Addresse email de l'orateur |
soibel [at] math [dot] ksu [dot] edu |
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Institution de l'orateur |
Kentucky State University |
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Titre |
Cohomological Hall algebras, refined BPS invariants and vertex algebra at the corner |
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Résumé |
Cohomological Hall algebras (COHAs for short) were introduced in 2010 in my joint work
with Maxim Kontsevich. They can be thought of as mathematical incarnations of
``multiparticle BPS algebras" of 3-dimensional Calabi-Yau manifolds (more generally, 3-
dimensional Calabi-Yau categories). After discussion of basic definitions I plan to overview an
application of COHA to the generalization of AGT conjecture which provides an action of
Gaiotto-Rapcak vertex algebra at the corner on the equivariant Borel-Moore homology of the
moduli space of Nekrasov's spiked instantons. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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