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DTSTART;TZID=Europe/Paris:20260702T140000
DTEND;TZID=Europe/Paris:20260702T153000
DTSTAMP:20260626T080837Z
CREATED:20260626T060758Z
LAST-MODIFIED:20260626T080837Z
UID:12407-1783000800-1783006200@fermi.univ-tlse3.fr
SUMMARY:The thermal Hall response of the phonon gas -  (Kamran Behnia /  LNCMI / Seminar). - 2/07/2026\, 14H
DESCRIPTION:Seminar LNCMI \nKamran Behnia\, Laboratoire de Physique et Etude de Matériaux (ESPCI\, Université Paris Sciences & Lettres\, CNRS) \nSeminar LNCMI\, 2/07/2026\, 14H\, LNCMI\, Toulouse \nAbstract\nFirst observed two decades ago [1]\, the phonon Hall effect\, is nowadays observed in numerous insulators\, including non-magnetic ones [2-4].\nThe observation implies a field-induced misalignment between the heat flux and the entropy flux vectors. Phonon thermal Hall conductivity peaks when most phonon-phonon collisions become normal\, indicating a link with phonon hydrodynamics and a magnetic field induced change in the balance of three phonon events.\nThis conjecture is backed by the case of molecular gases subject to magnetic field. In their case\, the Seftleben-Beenakker effect [5] arises due to the field-induced modification of the molecular collision cross sections. The breakdown of the Born-Oppenheimer approximation in a magnetic field can offer a geometric [Berry] phase to ordinary acoustic phonons. A picture\, which would explain the experimentally observed bound to the thermal Hall of elemental insulators [6]. \n[1] C. Strohm\, G. L. J. A. Rikken and P. Wyder\, Phys. Rev. Lett. 95\, 155901 (2005).\n[2] X. Li\, B. Fauqué\, Z. Zhu\, and K. Behnia\, Phys. Rev. Lett. 124\, 105901 (2020).\n[3] X. Li\, Y. Machida\, A. Subedi\, Z. Zhu\, L. Li & K. Behnia\, Nature Comm. 14\, 1027 (2023).\n[4] X. B. Jin et al.\, Phys. Rev. Lett. 135\, 196302 (2025).\n[5] L. Hermans\, A. Schutte\, H. Knaap\, and J. Beenakker\, Physica 46\, 491 (1970).\n[6] K. Behnia\, Phonon thermal Hall as a lattice Aharonov-Bohm effect\, SciPost Phys. Core 8\, 061 (2025). \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1
URL:https://fermi.univ-tlse3.fr/event/the-thermal-hall-response-of-the-phonon-gas-kamran-behnia-lncmi-seminar-2-07-2026-14h/
LOCATION:Salle de seminaire du LNCMI\, Champs Magnétiques Pulsés\, 143 avenue de Rangueil\, Toulouse\, France
CATEGORIES:Events,LNCMI,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260707T140000
DTEND;TZID=Europe/Paris:20260707T150000
DTSTAMP:20260622T121552Z
CREATED:20260621T121411Z
LAST-MODIFIED:20260622T121552Z
UID:12390-1783432800-1783436400@fermi.univ-tlse3.fr
SUMMARY:Prediction and Control of Evolving Complex Communities. - (Derviş Can Vural / LPT / Seminar). -7/07/2026\, 14H
DESCRIPTION:Séminaire LPT \nDerviş Can Vural (University of Notre Dame) \nSeminar LPT\, 7/07/2026\, 14H\, 3R4\, salle de conférence \nSummary :\nThe interactions between species in a complex ecological community can be described in terms of simple reaction kinetics: Just like an enzyme turns a substrate into a product\, a goat transforms plant mass into goat mass. However\, unlike ordinary chemical reactions\, the stoichiometry and reaction rates between species can change over time. In this talk I will present the mathematical description of three interesting cases where this happens [1-4]. (1) Evolution: Species adapt to each other: for example\, some plants will evolve to become bitter or poisonous\, in which case a goat may not carry out its transformation as effectively. In turn\, the goat may evolve in response to this change\, say\, producing enzymes that will neutralize the poison. This “evolutionary arms race” will often finalize with an extinction (2) Migration: In some other cases\, one or more new species might migrate and invade a community\, thereby transforming the reaction network. This could happen naturally\, through unintentional human activities\, or intentionally\, via ecological engineering. (3) Fluctuations: The mass transfer stoichiometry between species are often modulated by external factors such as sunlight\, pH\, and temperature: For example\, in a cold year\, a goat has to eat more plant mass before producing a new goat\, since it must spend some of the energy to produce heat. In all three cases\, I will focus on the statistics of species abundances\, and the “first passage statistics” to extinction or some other biologically relevant target.\n[1] V. Nguyen\, D.C. Vural\, Extinction in complex communities as driven by adaptive dynamics. Journal of Evolutionary Biology\, January 1 (2021)\n[2] V. Nguyen\, D.C. Vural\, Theoretical guidelines for editing ecological communities. Journal of Theoretical Biology\, 534\, 110945 (2021)\n[3] M. Heidelman\, D.C. Vural\, Coexistence\, crossover and extirpation in coalescent communities and ecotones\, Oikos\, e11952 (2026 )\n[4] Eskin C\, Nguyen V\, Vural DC. Feasibility as a moving target: Fluctuating species interactions lead to universal power law in equilibrium abundances. arXiv preprint arXiv:2602.18942. 2026 Feb 21.
URL:https://fermi.univ-tlse3.fr/event/prediction-and-control-of-evolving-complex-communities-dervis-can-vural-lpt-seminar-7-07-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260709T140000
DTEND;TZID=Europe/Paris:20260709T153000
DTSTAMP:20260622T121606Z
CREATED:20260620T085455Z
LAST-MODIFIED:20260622T121606Z
UID:12292-1783605600-1783611000@fermi.univ-tlse3.fr
SUMMARY:CRYSTAL\, an ongoing project for a theoretical chemical approach to solids. - (Silvia Casassa / LCPQ / Seminar). - 9 / 07 /2026\, 14H
DESCRIPTION:Séminaire du LCPQ \nSilvia Casassa CRYSTAL group in the University of Turin \nSeminar LCPQ\, 9/07/2026\, 14H
URL:https://fermi.univ-tlse3.fr/event/crystal-an-ongoing-project-for-a-theoretical-chemical-approach-to-solids-silvia-casassa-lcpq-seminar-9-07-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCPQ,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260710T140000
DTEND;TZID=Europe/Paris:20260710T170000
DTSTAMP:20260624T085258Z
CREATED:20260619T080037Z
LAST-MODIFIED:20260624T085258Z
UID:12396-1783692000-1783702800@fermi.univ-tlse3.fr
SUMMARY:Correlated quantum-chemistry method for solids with the Clifford formalism. - (Amer Alrakik / LCPQ / Thèse). - 10/07/2026\, 14H
DESCRIPTION:Soutenance de thèse \nAmer Alrakik\, LCPQ\, Seminar room\, Bat. 3R4 \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/correlated-quantum-chemistry-method-for-solids-with-the-clifford-formalism-amer-aalrakik-lcpq-these-10-07-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LCPQ
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260922T140000
DTEND;TZID=Europe/Paris:20260922T150000
DTSTAMP:20260622T122035Z
CREATED:20260617T121950Z
LAST-MODIFIED:20260622T122035Z
UID:12392-1790085600-1790089200@fermi.univ-tlse3.fr
SUMMARY:TBA. - (Sariah Al Saati/ LPT / Seminar). -22/09/2026\, 14H
DESCRIPTION:Séminaire LPT \nSariah Al Saati (École polytechnique) \nSeminar LPT\, 22/09/2026\, 14H\, 3R4\, salle de conférence
URL:https://fermi.univ-tlse3.fr/event/tba-sariah-al-saati-lpt-seminar-22-09-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261006T140000
DTEND;TZID=Europe/Paris:20261006T153000
DTSTAMP:20260622T121611Z
CREATED:20260615T082410Z
LAST-MODIFIED:20260622T121611Z
UID:12238-1791295200-1791300600@fermi.univ-tlse3.fr
SUMMARY:TBA. - (Hervé Turlier / LPT / Seminar). -6/10/2026\, 14H
DESCRIPTION:Séminaire LPT \nHervé Turlier (CBI) \nSeminar LPT\, 6/10/2026\, 14H\, 3R4\, salle de conférence
URL:https://fermi.univ-tlse3.fr/event/tba-herve-turlier-lpt-seminar-6-10-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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