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Statut |
Confirmé |
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Série |
IPN-X |
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Domaines |
hep-ph |
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Date |
Mardi 20 Fevrier 2018 |
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Heure |
11:00 |
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Institut |
CPHT |
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Salle |
Salle de conférences Louis Michel, bât. 6 |
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Nom de l'orateur |
Larsen |
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Prenom de l'orateur |
Kasper |
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Addresse email de l'orateur |
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Institution de l'orateur |
Southampton U. |
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Titre |
Algebraic geometry applied to multi-loop scattering amplitudes |
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Résumé |
The computation of two-loop amplitudes forms a current bottleneck
to computing precision-level cross sections for LHC phenomenology.
In this talk I will discuss several new methods for analytic
evaluation of two-loop amplitudes, drawing inspiration from
algebraic geometry and modern unitarity. More specifically,
the methods involve efficient determination of a basis of integrals
in terms of which the amplitude is decomposed; derivation of
the integral identities needed to perform the decomposition;
and evaluation of the basis integrals via differential equations.
The first step of determining a basis of integrals has been
implemented in the publicly available code Azurite which I will
discuss. I will also discuss future implementations of the methods
and their application to computing the two-loop five-gluon QCD amplitude. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- 2018-02-20_slides.pdf (2650232 bytes)
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