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DTSTART;TZID=Europe/Paris:20251104T140000
DTEND;TZID=Europe/Paris:20251104T153000
DTSTAMP:20260430T214843
CREATED:20251028T143744Z
LAST-MODIFIED:20251030T091926Z
UID:11732-1762264800-1762270200@fermi.univ-tlse3.fr
SUMMARY:Réseaux de tenseurs pour la résolution d’EDP multi-échelles. -(Jheng-Wei Li / LPT / Seminar). - 4/11/2025\, 14H
DESCRIPTION:Séminaire LPT \nJheng-Wei Li (CEA) \nSeminar LPT\, 4/11/2025\, 14H\, 3R4\, salle de conférence \nSummary \nMany problems in science and engineering are described by partial differential equations (PDEs). Examples range from neutron diffusion in nuclear reactors to electron motion on superlattices. These equations are hard to solve in practice because they involve many different length scales that render conventional discretization approaches prohibitively costly. \nIn this talk\, I will show how ideas from many-body physics\, in particular tensor networks\, can overcome this difficulty. Tensor networks are clever ways of compressing large\, structured data without losing essential information. Originally invented to describe quantum many-body wavefunctions\, they can also be adapted to PDEs. I will use two simple\, instructive examples to illustrate how to accomplish this. \nThe key message is that « exponentially many » variables do not necessarily imply « exponentially hard » computations. By bridging concepts from many-body physics and functions of continuous variables\, tensor networks give a promising pathway toward a scalable approach for multi-scale PDEs and beyond. \n\n\n\n 
URL:https://fermi.univ-tlse3.fr/event/reseaux-de-tenseurs-pour-la-resolution-dedp-multi-echelles-jheng-wei-li-lpt-seminar-4-11-2025-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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DTSTART;TZID=Europe/Paris:20251104T140000
DTEND;TZID=Europe/Paris:20251104T170000
DTSTAMP:20260430T214843
CREATED:20251108T093603Z
LAST-MODIFIED:20251208T093657Z
UID:11810-1762264800-1762275600@fermi.univ-tlse3.fr
SUMMARY:Échange de moment angulaire en diffusion inélastique électron-lumière : théorie et application en microscopie électronique ultrarapide. - (Simon Garrigou / CEMES / These). - 4/11/2025\, 14H00
DESCRIPTION:Soutenance de thèse \nSimon Garrigou\, Salle de conférence du CEMES \nCompositition du jury: \n\n\n\n\n\n\nM. Sivis MURAT– Rapporteur\, Max Planck Institute for Multidisciplinary Sciences\nM. Luc HENRARD – Rapporteur\, Université de Namur\nMme Amélie JUHIN\, – Examinatrice\, CNRS\nMme Dana-Codruta MARINICA – Examinateur\, Université Paris Sud\nM. Xavier MARIE – Examinateur\, Institut National des Sciences Appliquées\nM. Mathieu Kociak – Examinateur\, CNRS\nM. Jesse Groenen –Co-directeur de thèse\, Université de Toulouse\nM. Hugo LOURENÇO-MARTINS –Co-directeur de thèse\, CNRS
URL:https://fermi.univ-tlse3.fr/event/echange-de-moment-angulaire-en-diffusion-inelastique-electron-lumiere-theorie-et-application-en-microscopie-electronique-ultrarapide-simon-garrigou-cemes-these-4-11-2025-14h00/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:CEMES,Events,HDR / Thesis
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