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DTSTART;TZID=Europe/Paris:20211001T113000
DTEND;TZID=Europe/Paris:20211001T130000
DTSTAMP:20260425T051351
CREATED:20210924T082317Z
LAST-MODIFIED:20211011T095354Z
UID:6835-1633087800-1633093200@fermi.univ-tlse3.fr
SUMMARY:Ultracold linelands (Patrizia VIGNOLO / SFP / Seminar) - 1/10\, 11H30
DESCRIPTION:Patrizia VIGNOLO (Institut de Physique de Nice)\, \nsera marraine de la promotion 2022 du master 2 de physique fondamentale de l’Université Paul Sabatier. \n\nTéléchargez la présentation du séminaire: Seminaire_SFP_VIGNOLO_1oct21 \n  \n\n \n\n 
URL:https://fermi.univ-tlse3.fr/event/ultracold-linelands-patrizia-vignolo-sfp-seminar/
LOCATION:Amphi CONCORDE\,  Bâtiment U4\, Amphithéâtre Concorde - Université Paul Sabatier\, Toulouse\, 31400\, France
CATEGORIES:Events,Seminars,SFP / SFC
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2021/09/SFP_1oct21.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211005T140000
DTEND;TZID=Europe/Paris:20211005T160000
DTSTAMP:20260425T051351
CREATED:20210829T093001Z
LAST-MODIFIED:20211011T120415Z
UID:6050-1633442400-1633449600@fermi.univ-tlse3.fr
SUMMARY:Effects of spin-phonon coupling in frustrated Heisenberg models (Francesco Ferrari / LPT / Seminary) - 5/10\, 14H.
DESCRIPTION:Francesco Ferrari (Université Goethe de Francfort) \n\nThe existence and stability of spin-liquid phases represent a central topic in the field of frustrated magnetism. While a few examples of spin-liquid ground states are well established in specific models (e.g. the Kitaev model on the honeycomb lattice)\, recent investigations have suggested the possibility of their appearance in several Heisenberg-like models on frustrated lattices [1]. An important related question concerns the stability of spin liquids in the presence of small perturbations in the Hamiltonian. \nIn this respect\, the magnetoelastic interaction between spins and phonons represents a relevant and physically motivated perturbation\, which has been scarcely investigated so far. We have studied the effect of the spin-phonon coupling on prototypical models of frustrated magnetism\, adopting a variational framework based upon Gutzwiller-projected wave functions\, implemented with a spin-phonon Jastrow factor\, providing a full quantum treatment of both spin and phonon degrees of freedom [2]. The results on the frustrated J1-J2 Heisenberg model on one- and two-dimensional (square) lattices show that\, while a valence-bond crystal is prone to lattice distortions\, a gapless spin liquid is stable for small spin-phonon couplings [3]. \n\n[1] L. Savary\, L. Balents\, Rep. Prog. Phys. 80\, 016502 (2017).\n[2] F. Ferrari\, R. Valentí\, F. Becca\, Phys. Rev. B 102\, 125149 (2020).\n[3] F. Ferrari\, R. Valentí\, F. Becca\, Phys. Rev. B 104\, 035126 (2021).\n\n\n 
URL:https://fermi.univ-tlse3.fr/event/tba-francesco-ferrari-lpt-seminary/
LOCATION:Visio
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211012T140000
DTEND;TZID=Europe/Paris:20211012T160000
DTSTAMP:20260425T051351
CREATED:20210907T131731Z
LAST-MODIFIED:20211011T095534Z
UID:6360-1634047200-1634054400@fermi.univ-tlse3.fr
SUMMARY:Controlling the dynamics of populations in biology\, from proteins to ecological populations (Efe Ilker / LPT / Seminar) - 12/10\, 14H.
DESCRIPTION:Efe Ilker (MPI-PKS\, Dresde) \nTime is a major constraint for life. Biological systems need to adapt and respond accurately to changes in their environment. This is difficult to achieve : usually\, as we drive a system out of equilibrium\, the system lags behind the desired state due to information loss\, which\, for thermodynamic systems\, is in the form of dissipation. One solution is to drive the system very slowly\, but for biological processes speed is essential. So\, how can we compensate for this lag to move the system along a controlled trajectory in a finite time ? Can we find protocols to assist this driving via an auxiliary field that would always keep the system on the desired trajectory ? In this talk\, I will present a method to control the set of trajectories in stochastic networks that has close analogies with quantum adiabatic protocols (transitionless quantum driving). We will explore the implementation of these ideas with two example applications in biology : i) the evolution of populations under selective pressure and ii) in the context of protein folding biophysics. \nIn the first example\, I will show how to manipulate the evolutionary dynamics of cell populations by controlling selection [1] (e.g.\, dosage control of drugs). This could have wide potential applications\, from therapeutic strategies against complex diseases to crop design in response to climate change. In the second part\, I will first briefly mention a general method of such control for Markovian processes using a network theory of master equation systems [2]. As an example\, we will discuss a potential naturally adapted driving protocol as a response to heat shock\, by molecular chaperones acting as recovery agents for misfolded proteins in cells. \n[1] Iram et al.\, Controlling the speed and trajectory of evolution with counterdiabatic driving\, Nature Physics 17\, 135 (2021). \n[2] Ilker et al.\, Counterdiabatic control of biophysical processes\, arXiv:2106.07130 (2021).
URL:https://fermi.univ-tlse3.fr/event/controlling-the-dynamics-of-populations-in-biology-from-proteins-to-ecological-populations-efe-ilker-lpt-seminary/
LOCATION:Visio
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211019T140000
DTEND;TZID=Europe/Paris:20211019T160000
DTSTAMP:20260425T051351
CREATED:20210917T132812Z
LAST-MODIFIED:20211011T120536Z
UID:6362-1634652000-1634659200@fermi.univ-tlse3.fr
SUMMARY:Exact description of quantum stochastic models as quantum resistors (Tony Jin / LPT / Seminar) - 19/10\, 14H.
DESCRIPTION:Tony Jin (Université de Genève\, Suisse)  \nDiffusion is the transport regime most commonly encountered in nature and yet\, we do not have to this day a full comprehension of the microscopic origins of diffusion. In order to make progress\, it is thus important to have at our disposal toy models that showcase the right physical behavior while remaining simple enough to allow analytical computations. \nI will present a class of models called quantum stochastic Hamiltonians (QSH) that meet these criteria. Using Keldysh formalism\, I will first show how to exactly compute their Green’s function. Relying on this exact solution\, I will present a generic perturbative formalism allowing to derive the current at the diffusive scale with minimal computational effort. Applications to the dephasing model\, QSSEP and long-range stochastic hopping model will be presented.
URL:https://fermi.univ-tlse3.fr/event/tba-tony-jin-lpt-seminary/
LOCATION:Visio
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211021T110000
DTEND;TZID=Europe/Paris:20211021T123000
DTSTAMP:20260425T051351
CREATED:20210706T115615Z
LAST-MODIFIED:20220321T075144Z
UID:6055-1634814000-1634819400@fermi.univ-tlse3.fr
SUMMARY:Matières premières et énergie - les enjeux de demain (Olivier Vidal / CEMES / Seminar) - 21/10\, 11H.
DESCRIPTION:Les séminaires du jeudi \n 
URL:https://fermi.univ-tlse3.fr/event/matieres-premieres-et-energie-les-enjeux-de-demain-olivier-vidal-cemes-seminary/
LOCATION:salle de conférence du CEMES\, CEMES - 29\, rue Jeanne Marvig BP 94347\, Toulouse\, 31055\, France
CATEGORIES:CEMES,Events,Seminars
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2022/03/semianire_cemes_24mars22.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211021T140000
DTEND;TZID=Europe/Paris:20211021T160000
DTSTAMP:20260425T051351
CREATED:20210909T124724Z
LAST-MODIFIED:20211011T095006Z
UID:6381-1634824800-1634832000@fermi.univ-tlse3.fr
SUMMARY:Fractional spin/charge states in quantum chemistry (LCPQ / Zoom Seminar) - 21/10\, 14H.
DESCRIPTION:By Stijn De Baerdemacker from University of New Brunswick in Canada (http://www2.unb.ca/~sde6/) \nStjin’s work lies at the interface of Chemistry\, Physics and Mathematics (http://www2.unb.ca/~sde6/publications.html). \nAbstract: Many of the challenges in popular electronic structure methods for molecules are related to the (de)localization of electrons over the different subsystems in the compounds. We show how incorporating suitable constraints on the quantum many-body wavefunction can\n(1) lead to accurate electron (spin)localization in bond dissociation processes\, as described by Yang’s flat-plane conditions\, and\n(2) accurately capture static electron correlation via artificial spin-symmetry breaking/restoration in the Generator Coordinate Method framework.
URL:https://fermi.univ-tlse3.fr/event/to-be-annouced-lcpq-seminary/
CATEGORIES:Events,LCPQ,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211029T113000
DTEND;TZID=Europe/Paris:20211029T130000
DTSTAMP:20260425T051351
CREATED:20210925T093913Z
LAST-MODIFIED:20211112T090852Z
UID:7528-1635507000-1635512400@fermi.univ-tlse3.fr
SUMMARY:Comment la future phase de haute luminosité du collisionneur LHC du CERN\, qui doit permettre l'étude des interactions du boson de Higgs\, bouscule notre façon de calculer (Catherine Biscarat et Sylvain Caillou / SFP / Seminar) - 29/10\, 11H30
DESCRIPTION:Catherine Biscarat et Sylvain Caillou (Laboratoire de 2 Infinis\, L2IT) \n\nTéléchargez la présentation du séminaire: Seminaire SFP 29 octobre 2021
URL:https://fermi.univ-tlse3.fr/event/comment-la-future-phase-de-haute-luminosite-du-collisionneur-lhc-du-cern-qui-doit-permettre-letude-des-interactions-du-boson-de-higgs-bouscule-notre-facon-de-calculer-catherine-biscarat-et-sylvai/
LOCATION:Amphi CONCORDE\,  Bâtiment U4\, Amphithéâtre Concorde - Université Paul Sabatier\, Toulouse\, 31400\, France
CATEGORIES:Events,Seminars,SFP / SFC
END:VEVENT
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