Dynamic process and variation in the contact process

Dynamic process in one-dimensional contact process (CP) is studied by compu ter simulation. We carry out the experiment of phase transition by two diff erent methods: CP and its mean-field version. It is known that for both met hods, stationary state exhibits the critical slowing-down; relaxation time diverges near the phase boundary. In the present article, we find only for CP that the enhancement of fluctuation occurs in the transient state of dyn amical process. (C) 2000 Elsevier Science B.V. All rights reserved.