265 citations · 3.7k across the 158 of their papers we have counts for
7 papers · 1 filter
Degree Correlations in a Dynamically Generated Model Food Web
Per Arne Rikvold
We explore aspects of the community structures generated by a simple predator-prey model of biological coevolution, using large-scale kinetic Monte Carlo simulations. The model acc…
Asymptotic forms and scaling properties of the relaxation time near threshold points in spinodal-type dynamical phase transitions
Takashi Mori, Seiji Miyashita, Per Arne Rikvold
We study critical properties of the relaxation time at a threshold point in switching processes between bistable states under change of external fields. In particular, we investiga…
Complex dynamics in coevolution models with ratio-dependent functional response
Per Arne Rikvold
We explore the complex dynamical behavior of two simple predator-prey models of biological coevolution that on the ecological level account for interspecific and intraspecific comp…
Applications of Computer Simulations and Statistical Mechanics in Surface Electrochemistry
P. A. Rikvold, I. Abou Hamad, T. Juwono +2
We present a brief survey of methods that utilize computer simulations and quantum and statistical mechanics in the analysis of electrochemical systems. The methods, Molecular Dyna…
Effect of CO desorption and coadsorption with O on the phase diagram of a Ziff-Gulari-Barshad model for the catalytic oxidation of CO
G. M. Buendia, E. Machado, P. A. Rikvold
We study the effect of coadsorption of CO and O on a Ziff-Gulari-Barshad (ZGB) model with CO desorption (ZGB-d) for the reaction CO + O --> CO_2 on a catalytic surface. Coadsorptio…
Threshold Phenomena under Photo Excitation of Spin-crossover Materials with Cooperativity due to Elastic Interactions
Seiji Miyashita, Per Arne Rikvold, Takashi Mori +3
Photo-induced switching from the low-spin state to the high-spin state is studied in a model of spin-crossover materials, in which long-range interactions are induced by elastic di…
Scaling properties of the relaxation time near the mean-field spinodal
Takashi Mori, Seiji Miyashita, Per Arne Rikvold
We study the relaxation processes of the infinitely long-range interaction model (the Husimi-Temperley model) near the spinodal point. We propose a unified finite-size scaling func…