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UID:0-793@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20211019T110000
DTEND;TZID=Europe/Paris:20211019T120000
DTSTAMP:20211010T162837Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-camille-aron-lpens/
SUMMARY:Séminaire du LPTMS : Camille Aron (LPENS) - Salle des séminaires 
 du FAST et du LPTMS\, bâtiment Pascal n°530 - 19 Oct 21 11:00
DESCRIPTION:Non-analytic non-equilibrium field theory\nCamille Aron (Labora
 toire de Physique de l'Ecole Normale Supérieure)\nOnsite seminar + zoom (
 ID: 981 7596 6473\, Passcode: fCjZ6d)\n\nThe Landau-Ginzburg theory is a c
 ornerstone of modern physics that unifies the various equilibrium phase tr
 ansitions of matter in a common framework. The free energy\, functional of
  the order parameter\, is built on simple principles: locality\, symmetry\
 , stability\, and analyticity. It is still unclear when and how such a uni
 fied principle-based approach can be extended to non-equilibrium phase tra
 nsitions.\n\nIn this talk\, I will present the recent theoretical efforts 
 to address the non-equilibrium phase transition which occurs during the re
 sistive switching (RS) of a variety of correlated oxides: their resistivit
 y suddenly drops by several orders of magnitude when subject to a finite v
 oltage bias.\n\nThe particular case of RS will lead me to propose to aband
 on the principle of analyticity of the Landau potential away from thermal 
 equilibrium. This more general question will be addressed in the simpler c
 ontext of non-equilibrium versions of the Ising model. I will show how the
  usual φ^4 potential can be deformed by non-analytic operators of intrins
 ic non-equilibrium nature and use the renormalization group to discuss the
 ir low-energy relevance.
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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