Coexistence for Richardson type competing spatial growth models
Hoffman, Christopher
Ann. Appl. Probab., Tome 15 (2005) no. 1A, p. 739-747 / Harvested from Project Euclid
We study a large family of competing spatial growth models. In these models the vertices in ℤd can take on three possible states {0,1,2}. Vertices in states 1 and 2 remain in their states forever, while vertices in state 0, which are adjacent to a vertex in state 1 (or state 2), can switch to state 1 (or state 2). We think of the vertices in states 1 and 2 as infected with one of two infections, while the vertices in state 0 are considered uninfected. In this way these models are variants of the Richardson model. We start the models with a single vertex in state 1 and a single vertex in state 2. We show that with positive probability state 1 reaches an infinite number of vertices and state 2 also reaches an infinite number of vertices. This extends results and proves a conjecture of Häggström and Pemantle [J. Appl. Probab. 35 (1998) 683–692]. The key tool is applying the ergodic theorem to stationary first passage percolation.
Publié le : 2005-02-14
Classification:  First passage percolation,  Richardson’s model,  competing growth,  60K35,  82B43
@article{1107271666,
     author = {Hoffman, Christopher},
     title = {Coexistence for Richardson type competing spatial growth models},
     journal = {Ann. Appl. Probab.},
     volume = {15},
     number = {1A},
     year = {2005},
     pages = { 739-747},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1107271666}
}
Hoffman, Christopher. Coexistence for Richardson type competing spatial growth models. Ann. Appl. Probab., Tome 15 (2005) no. 1A, pp.  739-747. http://gdmltest.u-ga.fr/item/1107271666/