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Statut |
Confirmé |
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Série |
NUC-THEO |
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Domaines |
nucl-th |
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Date |
Jeudi 1 Fevrier 2024 |
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Heure |
14:00 |
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Institut |
IJCLAB |
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Salle |
A018 |
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Nom de l'orateur |
Frosini |
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Prenom de l'orateur |
Mikael |
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Addresse email de l'orateur |
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Institution de l'orateur |
CEA Cadarache |
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Titre |
Application of dimentionality reduction techniques to reduce the complexity of many-body formalisms |
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Résumé |
The resolution of the (nuclear) many-body Schroedinger equation typically involves the use of large tensors that present both storage and computational challenges. This statement is particularily true when going beyond mid-mass nuclei and / or designing symmetry breaking expansion methods to tackel open-shell nuclei. One possibility to reduce the storage cost is to design factorized formats of the tensors encoding the nuclear interaction but this usually requires to adapt the many-body framework in order to gain something out of it. In this presentation, an alternative route is explored by directly factorising many-body tensors arising beyond the mean-field and show applications based on ab initio chiral interactions by computing second-order perturbation theory correlation energy in systems that can simultaneously break all symmetries in realistic model spaces. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- Abstract.pdf (138842 bytes)
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