Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Dynamics of the frustrated Ising lattice gas Jeferson J. Arenzon,1,
 

Summary: Dynamics of the frustrated Ising lattice gas
Jeferson J. Arenzon,1,
* F. Ricci-Tersenghi,2,
and Daniel A. Stariolo1,
1
Instituto de Fi´sica, Universidade Federal do Rio Grande do Sul, CP 15051, 91501-970 Porto Alegre, RS, Brazil
2
Condensed Matter Group, Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11,
P.O. Box 586, 34100, Trieste, Italy
Received 23 March 2000
The dynamical properties of a three-dimensional model glass, the frustrated Ising lattice gas FILG , are
studied by Monte Carlo simulations. We present results of compression experiments, where the chemical
potential is either slowly or abruptly changed, as well as simulations at constant density. One time quantities
like density and two time quantities like correlations, responses, and mean square displacements are measured,
and the departure from equilibrium clearly characterized. The aging scenario, particularly in the case of density
autocorrelations, is reminiscent of spin glass phenomenology with violations of the fluctuation-dissipation
theorem, typical of systems with one replica symmetry breaking. The FILG, as a valid on-lattice model of
structural glasses, can be described with tools developed in spin glass theory and, being a finite-dimensional
model, can open the way for a systematic study of activated processes in glasses.
PACS number s : 75.10.Nr, 05.50. q, 75.40.Gb, 75.40.Mg

  

Source: Arenzon, Jeferson J. - Instituto de Física, Universidade Federal do Rio Grande do Sul
Ricci Tersenghi, Federico - Dipartimento di Fisica, Università di Roma "La Sapienza"
Stariolo, Daniel Adrián - Instituto de Física, Universidade Federal do Rio Grande do Sul

 

Collections: Materials Science; Physics