Response properties in the adsorption–desorption model on a triangular lattice

J.R. Šćepanović, D. Stojiljković, Z.M. Jakšić, Lj. Budinski-Petković and S.B. Vrhovac

Physica A: Statistical Mechanics and its Applications, 2016, vol. 451, issue C, 213-226

Abstract: The out-of-equilibrium dynamical processes during the reversible random sequential adsorption (RSA) of objects of various shapes on a two-dimensional triangular lattice are studied numerically by means of Monte Carlo simulations. We focused on the influence of the order of symmetry axis of the shape on the response of the reversible RSA model to sudden perturbations of the desorption probability Pd. We provide a detailed discussion of the significance of collective events for governing the time coverage behavior of shapes with different rotational symmetries. We calculate the two-time density–density correlation function C(t,tw) for various waiting times tw and show that longer memory of the initial state persists for the more symmetrical shapes. Our model displays nonequilibrium dynamical effects such as aging. We find that the correlation function C(t,tw) for all objects scales as a function of single variable ln(tw)/ln(t). We also study the short-term memory effects in two-component mixtures of extended objects and give a detailed analysis of the contribution to the densification kinetics coming from each mixture component. We observe the weakening of correlation features for the deposition processes in multicomponent systems.

Keywords: Random sequential adsorption; Desorption; Short-term memory effects; Triangular lattice (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:451:y:2016:i:c:p:213-226

DOI: 10.1016/j.physa.2016.01.055

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