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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-375@lptms.universite-paris-saclay.fr
DTSTART:20150702T143000Z
DTEND:20150702T160000Z
DTSTAMP:20150618T060812Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/tri-seminaire-de-
 physique-statistique-matthieu-wyart/
SUMMARY:Tri-séminaire de Physique Statistique : Matthieu Wyart - LPTMS\, s
 alle 201\, 2ème étage\, Bât 100\, Campus d'Orsay - 2 Juil 15 14:30
DESCRIPTION:Marginal stability and flow in granular materials\nMatthieu WYA
 RT (New York University)\n\nComplex systems are characterized by an abunda
 nce of meta-stable states.This is the case for granular materials\, that c
 an flow until one jammed configuration (among the exponentially many possi
 ble ones) is reached. I will argue that at least in popular simplified mod
 els of granular materials\, these dynamically-accessible configurations ar
 e stable\, but barely so. Such marginal stability offers a new perspective
  on both the solid and the liquid phase. I will discuss dense suspensions 
 and propose to describe flow as a gas of elementary excitations\, correspo
 nding to the opening and closing of contact between particles. This approa
 ch leads to a detailed scaling description of rheological properties and l
 ength scales of dense flows. If time permits I will discuss a classificati
 on of athermal glassy systems based on the stability of low-energy excitat
 ions.
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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