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DTSTART;TZID=Europe/Paris:20250701T140000
DTEND;TZID=Europe/Paris:20250701T153000
DTSTAMP:20260412T003544
CREATED:20250629T073624Z
LAST-MODIFIED:20250630T124946Z
UID:11604-1751378400-1751383800@fermi.univ-tlse3.fr
SUMMARY:Explorer la géométrie quantique par l’optique. - (Ivo Souza / LPT / Seminar). - 01/07/2025\, 14H
DESCRIPTION:Séminaire LPT \nIvo Souza (CFM\, San Sebastián) \nSeminar LPT\, 01/07/2025\, 14H\, 3R4\, salle de conférence \nRésumé :\nThe quantum geometry of electron states in crystals gives rise to fascinating phenomena\, such as topological (quantized) responses. Currently\, there is great interest in devising experimental protocols for directly probing the Berry curvature\, quantum metric\, and orbital moment of Bloch electrons. [*] Central to this effort is the notion that ground-state quantum geometry can be related to the excitation spectrum via optical sum rules. In this talk I will review those ideas\, from their early inception to recent developments. \n[*] Image empruntée à S. Kim et al.\, Science 388\, 1050 (2025).
URL:https://fermi.univ-tlse3.fr/event/explorer-la-geometrie-quantique-par-loptique-ivo-souza-lpt-seminar-01-07-2025-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2025/06/Souza-image.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250702T140000
DTEND;TZID=Europe/Paris:20250702T153000
DTSTAMP:20260412T003544
CREATED:20250628T124909Z
LAST-MODIFIED:20250630T124952Z
UID:11616-1751464800-1751470200@fermi.univ-tlse3.fr
SUMMARY:Instabilités de flexion dans les systèmes élasto-capillaires. - (Nicholas Brubaker / LPT / Seminar). - 02/07/2025\, 14H
DESCRIPTION:Séminaire LPT \nNicholas Brubaker (Université d’État de Californie\, Fullerton)) \nSeminar LPT\, 01/07/2025\, 14H\, 3R4\, salle de conférence \nSummary :\nDeforming an elastic plate around a liquid drop is an energetically efficient way to build microscale structures. However\, accessing the full design space of the structure requires being able to completely wrap the plate around the drop. Full wrapping is predicated on inducing a bending instability that occurs when the drop’s surface tension dominates the plate’s rigidity. We elucidate this bifurcation in some simplified models and discuss its ubiquity in many other elasto-capillary systems.
URL:https://fermi.univ-tlse3.fr/event/instabilites-de-flexion-dans-les-systemes-elasto-capillaires-nicholas-brubaker-lpt-seminar-02-07-2025-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250708T140000
DTEND;TZID=Europe/Paris:20250708T153000
DTSTAMP:20260412T003544
CREATED:20250626T074042Z
LAST-MODIFIED:20250630T125006Z
UID:11606-1751983200-1751988600@fermi.univ-tlse3.fr
SUMMARY:Chaînes Kitaev de fermions et de bosons. - (Tami Pereg-Barnea / LPT / Seminar). - 08/07/2025\, 14H
DESCRIPTION:Séminaire LPT \nTami Pereg-Barnea (Université McGill) \nSeminar LPT\, 08/07/2025\, 14H\, 3R4\, salle de conférence \nRésumé :\nThe Kitaev chain is a toy model for a one dimensional topological superconductor. It demonstrates how the superconductor can host Majorana modes at its edges. These special modes are their own antiparticles\, exhibit non-abelian statistics and can serve as building blocks of qubits. \nIn its original form the model is written for fermions (electron quasiparticles) and the Majoranas can be thought of as a half of an electron. In the fermionic part of the talk I will present some recent results on shuttling Maoranas on a 1D fermionic Kitaev chain. We will then introduce a bosonic analogue for the Kitaev model\, intended for photonic or cold atom systems. This model does not result in Majorana edge modes as those can not be made of bosons. Nevertheless\, the topology of the model leads to some interesting effects where a hermitian Hamiltonian leads to non-hermitian dynamics.
URL:https://fermi.univ-tlse3.fr/event/chaines-kitaev-de-fermions-et-de-bosons-tami-pereg-barnea-lpt-seminar-08-07-2025-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2025/06/LPT_Pereg-barnea.jpg
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