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Le serveur de séminaires SEMPARIS accueille toutes les annonces de séminaires de la région parisienne, dans tous les domaines de la physique et des mathématiques. Il vous permet aussi de recevoir par courrier électronique la sélection de votre choix. Enfin, il permet l'archivage des présentations au format PDF ou Powerpoint. [ Plus d'informations ]
Séminaires à venir dans la série RENC-THEO | ||
[ vue agenda ] |
Jeudi 13 Fevrier 2025, 10:00 à IHP, Pierre Grisvard | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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Abstract: | In this seminar I will present a new approach to the study of 4d superconformal theories with eight supercharges. We construct a large new family of these models in string theory, study their moduli space and RG flows between them triggered by relevant deformations. Our framework provides a realization of most known theories with Coulomb branch of low dimension and suggests a new organizing principle for class S theories. |
Jeudi 13 Fevrier 2025, 11:30 à IHP, Grisvard (314) | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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Abstract: | Scattering-amplitude methods have been successful in computing state-of-the-art observables for binary black-hole systems. In particular, Kerr black holes can be described via effective field theories for massive higher-spin particles. The cubic interactions for such theories were found in full generality and used to compute leading-order observables, to any order in the black holes spin. However, constructing higher-order interactions remains an open challenge. In this talk, I will propose two complementary approaches to tackle the problem. The first is a bottom-up approach, where we construct higher-spin EFTs, identify a set of physical constraints that underlie the Kerr amplitudes, and use them to obtain explicit four-point results. The second is a top-down approach, where we study higher-spin amplitudes in string theory and discuss their relation to Kerr. |
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