265 citations · 3.7k across the 158 of their papers we have counts for
10 papers · 1 filter
Field-driven solid-on-solid interfaces moving under a stochastic Arrhenius dynamic: effects of the barrier height
G. M. Buendia, P. A. Rikvold, M. Kolesik
We present analytical results and kinetic Monte Carlo simulations for the mobility and microscopic structure of solid-on-solid (SOS) interfaces driven far from equilibrium by an ex…
Effects of Preference for Attachment to Low-degree Nodes on the Degree Distributions of a Growing Directed Network and a Simple Food-Web Model
Volkan Sevim, Per Arne Rikvold
We study the growth of a directed network, in which the growth is constrained by the cost of adding links to the existing nodes. We propose a new preferential-attachment scheme, in…
Microstructure and velocity of field-driven solid-on-solid interfaces moving under stochastic dynamics with local energy barriers
G. M. Buendia, P. A. Rikvold, M. Kolesik
We study the microscopic structure and the stationary propagation velocity of (1+1)-dimensional solid-on-solid interfaces in an Ising lattice-gas model, which are driven far from e…
Waiting-time distribution for a stock-market index
Jae Woo Lee, Kyoung Eun Lee, Per Arne Rikvold
We investigate the waiting-time distribution of the absolute return in the Korean stock-market index KOSPI. We define the waiting time as a time interval during which the normalize…
Self-optimization, community stability, and fluctuations in two individual-based models of biological coevolution
Per Arne Rikvold
We compare and contrast the long-time dynamical properties of two individual-based models of biological coevolution. Selection occurs via multispecies, stochastic population dynami…
Effects of correlated interactions in a biological coevolution model with individual-based dynamics
Volkan Sevim, Per Arne Rikvold
Models of coevolution have recently been studied, in which a species is defined by a genome in the form of a bitstring, and the interactions between species i and j are given by a…
Decay of Metastable Nonequilibrium Phases, Enhanced Reaction Rate, and Dynamic Phase Transition in a Model of CO Oxidation with CO Desorption
E. Machado, G. M. Buendia, P. A. Rikvold +1
We present a computational study of the dynamic behavior of a Ziff-Gulari-Barshad model of CO oxidation with CO desorption on a catalytic surface. Our results provide further evide…
Cl electrosorption on Ag(100): Lateral interactions and electrosorption valency from comparison of Monte Carlo simulations with chronocoulometry experiments
I. Abou Hamad, S. J. Mitchell, Th. Wandlowski +2
We present Monte Carlo Simulations using an equilibrium lattice-gas model for the electrosorption of Cl on Ag(100) single-crystal surfaces. Fitting the simulated isotherms to chron…
Fluctuations in models of biological macroevolution
Per Arne Rikvold
Fluctuations in diversity and extinction sizes are discussed and compared for two different, individual-based models of biological coevolution. Both models display power-law distri…
Finite-temperature Simulations for Magnetic Nanostructures
M. A. Novotny, D. T. Robb, S. M. Stinnett +2
We examine different models and methods for studying finite-temperature magnetic hysteresis in nanoparticles and ultrathin films. This includes micromagnetic results for the hyster…