ONSET OF SPATIOTEMPORAL INTERMITTENCY IN A COUPLED-MAP LATTICE

We have investigated numerically the onset of spatiotemporal intermitt ency in a one-dimensional lattice of coupled nonlinear maps. The phase boundary between the laminar and intermittent states has a complicate d form, with several reentrant regions. Using finite-size scaling, we have determined the critical exponents associated with the transition to spatiotemporal intermittency for several values of the map's coupli ng parameter. The exponents appear to be nonuniversal in the weak-coup ling limit of the map.