L'évolution d'un système aléatoire de particules est étudiée lorsque la taille des particules croît par coagulation binaire, chaque réaction de coagulation impliquant nécessairement une particule de taille minimale. Nous montrons qu'une version renormalisée du processus stochastique associé converge vers une limite déterministe et étudions l'évolution temporelle de la taille minimale pour les modèles stochastique et déterministe.
A stochastic system of particles is considered in which the sizes of the particles increase by successive binary mergers with the constraint that each coagulation event involves a particle with minimal size. Convergence of a suitably renormalized version of this process to a deterministic hydrodynamical limit is shown and the time evolution of the minimal size is studied for both deterministic and stochastic models.
Mots clés : stochastic coalescence, min-driven clustering, hydrodynamical limit
@article{AIHPB_2011__47_2_329_0, author = {Basdevant, Anne-Laure and Lauren\c{c}ot, Philippe and Norris, James R. and Rau, Cl\'ement}, title = {A stochastic min-driven coalescence process and its hydrodynamical limit}, journal = {Annales de l'I.H.P. Probabilit\'es et statistiques}, pages = {329--357}, publisher = {Gauthier-Villars}, volume = {47}, number = {2}, year = {2011}, doi = {10.1214/09-AIHP349}, mrnumber = {2814413}, zbl = {1216.82024}, language = {en}, url = {http://archive.numdam.org/articles/10.1214/09-AIHP349/} }
TY - JOUR AU - Basdevant, Anne-Laure AU - Laurençot, Philippe AU - Norris, James R. AU - Rau, Clément TI - A stochastic min-driven coalescence process and its hydrodynamical limit JO - Annales de l'I.H.P. Probabilités et statistiques PY - 2011 SP - 329 EP - 357 VL - 47 IS - 2 PB - Gauthier-Villars UR - http://archive.numdam.org/articles/10.1214/09-AIHP349/ DO - 10.1214/09-AIHP349 LA - en ID - AIHPB_2011__47_2_329_0 ER -
%0 Journal Article %A Basdevant, Anne-Laure %A Laurençot, Philippe %A Norris, James R. %A Rau, Clément %T A stochastic min-driven coalescence process and its hydrodynamical limit %J Annales de l'I.H.P. Probabilités et statistiques %D 2011 %P 329-357 %V 47 %N 2 %I Gauthier-Villars %U http://archive.numdam.org/articles/10.1214/09-AIHP349/ %R 10.1214/09-AIHP349 %G en %F AIHPB_2011__47_2_329_0
Basdevant, Anne-Laure; Laurençot, Philippe; Norris, James R.; Rau, Clément. A stochastic min-driven coalescence process and its hydrodynamical limit. Annales de l'I.H.P. Probabilités et statistiques, Tome 47 (2011) no. 2, pp. 329-357. doi : 10.1214/09-AIHP349. http://archive.numdam.org/articles/10.1214/09-AIHP349/
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