Critical behavior of a non-equilibrium interacting particle system driven by an oscillatory field
Instituto de Investigaciones Fisicoquímicas Teóricas y
Aplicadas (INIFTA), UNLP CONICET, CIC (Bs. As.) - C. C. 16 Suc. 4,
1900 La Plata, Argentina
Accepted: 20 August 2001
First- and second-order temperature-driven transitions are studied, in a lattice gas driven by an oscillatory field. The short-time dynamics study provides upper and lower bounds for the first-order transition points obtained using standard simulations. The difference between upper and lower bounds is a measure for the strength of the first-order transition and becomes negligibly small for densities close to one half. In addition, we give strong evidence on the existence of multicritical points and a critical temperature gap, the latter induced by the anisotropy introduced by the driving field.
PACS: 64.60.Cn – Order-disorder transformations, statistical mechanics of model systems / 82.40.Bj – Oscillations, chaos, and bifurcations / 66.30.Hs – Self-diffusion and ionic conduction in nonmetals
© EDP Sciences, 2001