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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-622@lptms.universite-paris-saclay.fr
DTSTART:20181023T110000Z
DTEND:20181023T120000Z
DTSTAMP:20180913T063151Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-valentina-ros/
SUMMARY:Séminaire du LPTMS: Valentina Ros - LPTMS\, salle 201\, 2ème éta
 ge\, Bât 100\, Campus d'Orsay - 23 Oct 18 11:00
DESCRIPTION:Arrangement of local minima and phase transitions in the energy
  landscape of simple glassy models\nValentina Ros (IPhT\, CEA-Saclay)\nUnd
 erstanding the statistical properties of the stationary points of high-dim
 ensional\, random energy landscapes is a central problem in the physics of
  glassy systems\, as well as in interdisciplinary applications to computer
  science\, ecology and biology. In this talk\, I will discuss a framework 
 to perform the computation of the quenched complexity of stationary points
 \, making use of a replicated version of the Kac-Rice formula. I will disc
 uss its application to simple models (the spiked tensor model and its gene
 ralizations) which capture the competition between a deterministic signal 
 and stochastic noise\, and correspond to a spherical p-spin Hamiltonian en
 dowed with ferromagnetic multi-body interaction terms. I will describe the
  phase transitions that occur in the structure of the landscape when chang
 ing the signal-to-noise ratio\, and highlight the implications for the evo
 lution of local dynamics within the landscape.\n\nReference:\n\n 	Valentin
 a Ros\, Gerard Ben Arous\, Giulio Biroli and Chiara Cammarota\, Complex en
 ergy landscapes in spiked-tensor and simple glassy models: ruggedness\, ar
 rangements of local minima and phase transitions\, preprint cond-mat arXiv
 :1804.02686\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
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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