| Автор | Dickman, Ronald |
| Дата выпуска | 2009-08-01 |
| dc.description | I study the absorbing-state phase transition in the one-dimensional contact process with mobile disorder. In this model the dilution sites, though permanently inactive, diffuse freely, exchanging positions with the other sites, which host a basic contact process. Even though the disorder variables are not quenched, the critical behavior is affected: the critical exponents δ and z, the ratio and the moment ratio m = ⟨ρ<sup>2</sup>⟩/ρ<sup>2</sup> take values different from those of directed percolation, and appear to vary with the vacancy diffusion rate. While the survival probability starting from a single active seed follows the usual scaling, P(t)∼t<sup>−δ</sup>, at the critical point, the mean number of active sites and mean square spread grow more slowly than power laws. The critical creation rate increases with the vacancy density v and diverges at a value v<sub>c</sub><1. The scaling behavior at this point appears to be simpler than for smaller vacancy densities. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | IOP Publishing Ltd |
| Название | A contact process with mobile disorder |
| Тип | paper |
| DOI | 10.1088/1742-5468/2009/08/P08016 |
| Electronic ISSN | 1742-5468 |
| Журнал | Journal of Statistical Mechanics: Theory and Experiment |
| Том | 2009 |
| Первая страница | P08016 |
| Последняя страница | 20 |
| Аффилиация | Dickman, Ronald; Departamento de Física and National Institute of Science and Technology for Complex Systems, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, CP 702, 30123-970, Belo Horizonte, Minas Gerais, Brazil |
| Выпуск | 08 |
