Kinetic Phase Transition in A_2+2B_2→2B_2A Reaction System with Particle Diffusion

作     者：HUA Da-Yin WENG Xiao-Yan WANG Lie-Yan CHEN Ting 

作者机构：Physics Department Ningbo University Ningbo 315211 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2008年第49卷第4期

页      面：960-964页

核心收录：

学科分类：080701[工学-工程热物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

基　　金：The project supported by National Natural Science Foundation of China under Grant No.10575055 

主　　题：non-equilibrium phase transition reaction diffusion system 

摘      要：A lattice gas model is presented for the A2 ＋2B2 → 2B2A reaction system with particle diffusion in two dimensions. In the model, B2 dissociates in the random dimer-filling mechanism and A2 dissociates in the end-on dimer filling mechanism. A reactive window appears and the system exhibits a continuous phase transition from a reactive state to a ＂B ＋ vacancy＂ covered state with infinitely many absorbing states. When the diffusion of particle B is considered, there are only two absorbing states. It is found that the critical behavior of the continuous phase transition changes from the directed percolation （DP） class to the pair contact process with diffusion （PCPD） class.