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UID:0-904@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20231019T110000
DTEND;TZID=Europe/Paris:20231019T120000
DTSTAMP:20231003T133736Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-mehran-kardar-mit-usa/
SUMMARY:Séminaire du LPTMS : Mehran Kardar (MIT\, Cambridge) - Salle des s
 éminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 19 Oct 23 11:00
DESCRIPTION:Competition at the front of expanding populations Mehran Karda
 r (MIT\, Cambridge) When competing species grow into new territory\, the 
 population is dominated by descendants of successful ancestors at the expa
 nsion front. Successful ancestry depends of the reproductive advantage (fi
 tness)\, as well as ability and opportunity to colonize new domains. (1) B
 ased on symmetry considerations\, we present a model that  integrates bo
 th elements by coupling the classic description of one-dimensional competi
 tion (Fisher equation) to the minimal model of front shape (KPZ equation).
  Macroscopic manifestations of these equations on growth morphology are ex
 plored\, providing a framework to study spatial competition\, fixation\, a
 nd differentiation\, In particular\, we find that ability to expand in spa
 ce may overcome reproductive advantage in colonizing new territory. (2) Va
 riations of fitness\, as well as fixation time upon differentiation\, are 
 shown to belong to distinct universality classes depending on limits to ga
 in of fitness. 
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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