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Statut |
Confirmé |
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Série |
RENC-THEO |
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Domaines |
hep-th |
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Date |
Jeudi 3 Juin 2021 |
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Heure |
11:00 |
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Institut |
IHP |
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Salle |
https://zoom.us/j/97507124810 (pwd= 1234) |
|
Nom de l'orateur |
Lerche |
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Prenom de l'orateur |
Wolfgang |
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Addresse email de l'orateur |
wolfgang [dot] lerche [at] cern [dot] ch |
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Institution de l'orateur |
CERN |
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Titre |
Fluxes, Holomorphic Anomalies and Elliptic Genera in d=4 |
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Résumé |
Motivated by tests of Weak Gravity Conjectures, we investigate properties of
elliptic genera of string theories that arise in large distance limits of the
moduli space of F-theory compactifications. This allows for a non-perturbative
definition of elliptic genera that goes beyond the ordinary world-sheet
description. While this construction has been known for six-dimensional theories,
we find the four-dimensional variant to be surprisingly complex. The essential new
ingredient is background fluxes, and these lead to different sectors of the
elliptic genus with different modular properties. Crucial is the appearance of
derivatives which leads to novel modular (and hence, holomorphic) anomalies that
are worse than naively expected. We also give a physical interpretation of these
phenomena. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- Ellgen-2021-Paris.pdf (2322995 bytes)
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