Square lattice gases with two- and three-body interactions: A model for the adsorption of hydrogen on Pd(100)

1981 ◽  
Vol 108 (3) ◽  
pp. 503-525 ◽  
Author(s):  
K. Binder ◽  
D.P. Landau
Keyword(s):  
Lattice Gases ◽  
Square Lattice ◽  
Adsorption Of Hydrogen ◽  
Three Body

Theoretical Models of Cooperative Dynamics Near the Glass Transition

1990 ◽  
Vol 215 ◽  
Author(s):  
Josef Jäckle
Keyword(s):  
Glass Transition ◽  
Lattice Gas ◽  
Finite Size ◽  
Theoretical Models ◽  
Lattice Gases ◽  
Bootstrap Percolation ◽  
Square Lattice ◽  
High Particle Concentration ◽  
High Particle ◽  
Percolation Problem

AbstractIt is shown that diffusion in the hard-square and hard-octahedron lattice gases at high particle concentration has cooperative properties resembling molecular relaxation in undercooled liquids near the glass transition. For these models a characteristic length of cooperativity is introduced by an underlying percolation problem, which determines whether permanently blocked particles exist in lattices of finite size. The percolation problem belongs to a general class of bootstrap percolation models. Salient Monte Carlo results for the concentration and size dependence of self diffusion in the hard-square lattice gas are presented. Similarities with the n-spin facilitated kinetic Ising models are also pointed out.

INTERFACE INSTABILITY IN DRIVEN LATTICE GASES

Fractals ◽  
1993 ◽  
Vol 01 (04) ◽  
pp. 954-958 ◽  
Author(s):  
G. SZABÓ ◽  
A. SZOLNOKI ◽  
T. ANTAL ◽  
I. BORSOS
Keyword(s):  
Lattice Gas ◽  
Nearest Neighbor ◽  
Interfacial Instability ◽  
Lattice Gases ◽  
Square Lattice ◽  
Wave Number ◽  
Material Transport ◽  
Interface Instability ◽  
Amplification Rate ◽  
Lattice Gas Models

In driven lattice-gas models, the enhanced material transport along the interfaces results in an instability of the planar interfaces and leads to the formation of multistrip states. To study the interfacial instability, Monte Carlo simulations are performed on different square lattice-gas models. The amplification rate of a periodic perturbation depends on the wave number k; it has a positive maximum at a characteristic value of k on the analogy of the Mullins-Sekerka instability. Significant differences have been found in the dependence of amplification rate on k when comparing the systems with nearest neighbor repulsive and nearest and next-nearest neighbor attractive interactions. The results agree qualitatively with theories neglecting the fluctuations.

scholarly journals Electron Correlations in the Nagaoka State on the Square Lattice -Three-Body Correlations-

1999 ◽  
Vol 68 (11) ◽  
pp. 3682-3692 ◽  
Author(s):  
Jun-ichi Igarashi ◽  
Manabu Takahashi ◽  
Tatsuya Nagao
Keyword(s):  
Square Lattice ◽  
Electron Correlations ◽  
Three Body

Phase diagrams for a square lattice with two- and three-body interactions

1982 ◽  
Vol 119 (2-3) ◽  
pp. L371-L377 ◽  
Author(s):  
Francisco Claro ◽  
Vijay Kumar
Keyword(s):  
Phase Diagrams ◽  
Square Lattice ◽  
Three Body

MANY-DIMENSIONAL LORENTZ CELLULAR AUTOMATA AND TURING MACHINES

1996 ◽  
Vol 06 (06) ◽  
pp. 1127-1135 ◽  
Author(s):  
LEONID A. BUNIMOVICH
Keyword(s):  
Cellular Automata ◽  
Artificial Life ◽  
Lattice Gases ◽  
Square Lattice ◽  
Turing Machines ◽  
Natural Conditions ◽  
Vortex Sheets ◽  
Cubic Lattices ◽  
Higher Dimensional ◽  
Lorentz Lattice Gases

We study the class of cellular automata that generalizes the Lorentz lattice gases in statistical mechanics, the models of industrious ants in the theory of an artificial life and the so-called Tur-mites (many-dimensional Turing machines). We prove that on the square lattice ℤd, d = 2, the existence of a bounded orbit of a particle (ant, machine) determines all nondegenerate local scattering rules (states of a machine). For higher dimensional (d ≥ 3) cubic lattices we show that under some natural conditions all possible bounded orbits (vortices) can live only in some “vortex sheets” that have a dimension strictly less than d.

Sign in / Sign up

Export Citation Format

Share Document