title: Replication of noise-sustained autocatalytic chemical structures.
abstract: Autocatalytic systems in a differential-flow reactor may undergo a differential-flow-induced chemical instability toward a convectively unstable regime, in which noise-sustained structures may appear. This is the case of a system with Gray-Scott kinetics in a packed-bed reactor, as reported in [B. von Haeften and G. Izus, Phys. Rev. E 67, 056207 (2003)]. In this work, two identical copies of such a system are coupled in master-slave configuration and submitted to independent spatiotemporal Gaussian white noise sources. Numerical simulation of two-dimensional reactors with uniform and Poiseuille flows reveals that the slave system replicates to a very high degree of precision and the convective patterns arising in the master one due to the presence of noise. The quality of this synchronization is assessed through several measures. A convective instability in the synchronization manifold is theoretically predicted and numerically confirmed.
authors.affiliation: IFIMAR (Universidad Nacional de Mar del Plata and CONICET), B7602AYL Mar del Plata, Argentina. izus@mdp.edu.ar
authors.forename: Gonzalo G
authors.initials: GG
authors.lastname: Izús
authors.forename: Roberto R
authors.initials: RR
authors.lastname: Deza
authors.forename: Alejandro D
authors.initials: AD
authors.lastname: Sánchez