Quasi-stationary distributions for models of heterogeneous catalysis

被引：16
|
作者：
de Oliveira, MM [1 ]
Dickman, R [1 ]
机构：
[1] Univ Fed Minas Gerais, Dept Fis, Inst Ciencias Exatas, BR-30123970 Belo Horizonte, MG, Brazil
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2004年 / 343卷
关键词：
quasi-stationary distributions; mean-field theory; catalysis models;
D O I：
10.1016/j.physa.2004.06.155
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We construct the quasi-stationary (QS) distribution for two models of heterogeneous catalysis having two absorbing states: the ZGB model for the oxidation of CO, and a version with noninstantaneous reactions. Using a mean-field-like approximation, we study the quasistationary surface coverages, moment ratios and the lifetime of the QS state. We also derive an improved, consistent one-site mean-field theory for the ZGB model. (C) 2004 Elsevier B.V. All rights reserved.
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页码：525 / 542
页数：18
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