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BEGIN:VEVENT
UID:1-402@lptms.universite-paris-saclay.fr
DTSTART:20160119T110000Z
DTEND:20160119T121500Z
DTSTAMP:20160105T093051Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-beatriz-seoane-bartolome/
SUMMARY:Séminaire du LPTMS: Beatriz Seoane Bartolome - LPTMS\, salle 201\,
  2ème étage\, Bât 100\, Campus d'Orsay - 19 Jan 16 11:00
DESCRIPTION:One solid\, two glasses\nBeatriz Seoane Bartolome (LPT-ENS Pari
 s)\n\n\nGlasses (aka amorphous solids) exhibit various anomalies whencompa
 red with crystals (aka ordered solids):  they display enhanced transport\
 , activated slow dynamics across energy barriers\, excess vibrational mode
 s with respect to Debye’s theory (the so-called Boson Peak)\, and respon
 d drastically to very small mechanical deformations. In this work\, we ide
 ntify the common\, universal origin to these anomalies in a realistic\, th
 ree-dimensional model of glasses. We show that in packed hard spheres\, vi
 brations become highly correlated in space and time at a sharply defined t
 hreshold\, which we call "Gardner threshold".  This work is deeply relate
 d with the last developments in the analytical theory of glasses\, where t
 he glass problem has been finally solved exactly in the artificial limit o
 f infinite spatial dimensions. The analytical solution predicts the existe
 nce of a genuine phase transition (a Gardner phase transition) within the 
 glass\, separating the glass :and the jamming transitions. In this work we
 \, not only establish the  relevance of the (remanent of the) Gardner tra
 nsition for real glasses\, but also characterize it using well-defined obs
 ervables\, including time-dependent quantities and spatial correlations\, 
 that should be experimentally measurable.\n\n
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
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  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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