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UID:9099@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20260616T143000
DTEND;TZID=Europe/Paris:20260616T153000
DTSTAMP:20260511T143206Z
URL:https://www.i2m.univ-amu.fr/evenements/phase-transitions-in-charged-po
 lymer-models/
SUMMARY:Julien POISAT (Université Paris Dauphine): Phase transitions in ch
 arged polymer models
DESCRIPTION:Julien POISAT: I will review some old and recent results on the
  topic of charged polymer models. Those are random walk models with disord
 ered interaction at self-intersections\, introduced by Kantor and Kardar i
 n the 90’s. Precise results have been obtained so far for the one-dimens
 ional model in the annealed setting\, showing a phase transition from a co
 llapsed phase (attractive interactions prevailing) to an extended phase (r
 epulsive interactions prevailing). Those results have been then extended t
 o higher dimensions\, in a more qualitative way. I will also mention a var
 iant model with quenched disorder\, for which a freezing transition was co
 njectured by Derrida\, Griffiths and Higgs. Based on joint works with Q. B
 erger\, F. Caravenna\, F. den Hollander and N. Pétrélis.
CATEGORIES:Séminaire,ALEA,Probabilités
LOCATION:I2M Saint-Charles - Salle de séminaire\, Université Aix-Marseill
 e\, Campus Saint-Charles\, 3 Place Victor Hugo\, Marseille\, 13003\, Franc
 e
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Université Aix-Marseille\,
  Campus Saint-Charles\, 3 Place Victor Hugo\, Marseille\, 13003\, France;X
 -APPLE-RADIUS=100;X-TITLE=I2M Saint-Charles - Salle de séminaire:geo:0,0
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DTSTART:20260329T030000
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