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UID:0-797@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20211207T110000
DTEND;TZID=Europe/Paris:20211207T120000
DTSTAMP:20211201T155202Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-denis-ullmo-lptms/
SUMMARY:Séminaire du LPTMS : Denis Ullmo (LPTMS) - Petit amphi\, bâtiment
  Pascal n° 530 - 7 Déc 21 11:00
DESCRIPTION:A Mean Field Game description of pedestrian dynamic\nDenis Ullm
 o (Laboratoire de Physique Théorique et Modèles Statistiques)\nOnsite se
 minar + zoom (ID: 962 4404 9550\, PW: 9thN9E).\n\nIn this talk\, I will c
 onsider the dynamics of crowds at the "operational" level\, which correspo
 nds to the relatively short time and length scale associated for instance 
 with a single obstacle.  Comparing various model predictions with experim
 ental data\, I will show that\, contrarily to what is usually assumed in s
 uch context\, it is necessary to take into account the fact that pedestria
 n have the capacity to "anticipate" to reproduce even the qualitative prop
 erties of the experimental data.  Models based on a analogy with granular
  materials therefore fails drastically\, and even modern models of crowds 
 dynamics including short term (ie up to the next collision) anticipation a
 re unable to reproduce the essential feature of the experiments.\n\nFurthe
 rmore\, I will show that a very simple model based on Mean Field Game\, th
 at can be analyzed through a very elegant connection with the non-linear S
 chrödinger equation\, is able (actually by construction) to take into acc
 ount the effects of anticipation of the pedestrians\, and reproduce nicely
  the important features of the experiment.
CATEGORIES:seminars
LOCATION:Petit amphi\, bâtiment Pascal n° 530\, rue André Rivière\, Ors
 ay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Rivière\, Orsay
 \, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Petit amphi\, bâtiment Pasca
 l n° 530:geo:0,0
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