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Statut |
Confirmé |
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Série |
SEM-LPTMC |
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Domaines |
cond-mat.mes-hall |
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Date |
Mercredi 4 Décembre 2019 |
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Heure |
11:00 |
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Institut |
LPTMC |
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Salle |
Jussieu tower 13-12, 5th floor, room 5-23 |
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Nom de l'orateur |
Rossi |
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Prenom de l'orateur |
Riccardo |
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Addresse email de l'orateur |
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Institution de l'orateur |
Flatiron Institute, New-York |
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Titre |
New diagrammatic Monte Carlo approches to the quantum many-body problem |
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Résumé |
Finding a way to numerically simulate many interacting quantum particles would be of great fundamental and practical value. In this talk, I will discuss a broad class of approaches based on diagrammatic expansions that allows to obtain numerically-exact results in a time polynomially increasing with the inverse of the requested precision. Recent advances allow to include renormalization and non-perturbative information (e.g. Dynamical Mean Field Theory for lattice problems) in the expansion using a succinct, and, most importantly, very efficient, formalism. I will present state-of-the-art numerically-exact results for the doped square-lattice Hubbard model, and the generic efficient code we have developed. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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