https://doi.org/10.1007/s100510050813
Dynamic response of an irreversible reaction system to a pulsed perturbation
Instituto de Investigaciones
Fisicoquímicas Teóricas y Aplicadas
(INIFTA), Facultad de Ciencias Exactas,
Universidad Nacional de La Plata (CONICET, CIC, UNLP),
Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina
Corresponding author: a ealbano@isis.unlp.edu.ar
Received:
6
July
1998
Published online: 15 June 1999
The dynamic response of the ZGB surface reaction lattice gas
model, for the catalyzed reaction 
, is studied
by means of Monte-Carlo simulations in the neighborhood of its second order
irreversible phase transition (IPT). It is found that shortly after driving
a stationary configuration into the absorbing state, the relaxation of the
system can be well described by a stretched exponential behavior. The
dependence of the relaxation characteristic time and the induced changes on
the coverage of the reactants, on both, the intensity and the period of the
pulsed perturbation, are systematically investigated. The obtained insights
can straightforwardly be extended to a wide variety of irreversible systems
exhibiting second order IPT's, such as directed percolation, forest fire
models, the contact process, branching annihilating walkers, catalyzed
reactions, etc.
PACS: 02.50.Ey – Stochastic processes / 82.65.Jv – Heterogeneous catalysis at surfaces / 89.90.+n – Other areas of general interest to physicists
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
