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

一个格子气体模型为 A 被介绍 2+ 2B 2→ 有在二种尺寸的粒子散开的 2B 2 A 反应系统。在模型， B 2 在随机的暗淡充满的机制分裂， 2 在在端点的更暗淡的充满机制分裂。一扇反应窗户出现，系统从一个反应状态展出连续阶段转变到“一个 B + 空缺”盖住的状态与无穷地许多吸收状态。当粒子 B 的散开被考虑时，仅仅有二吸收状态。连续阶段转变的批评行为与散开(PCPD ) 从指导过滤(DP ) 把班改变到对接触过程，这被发现班。

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.