6533b85efe1ef96bd12c0790
RESEARCH PRODUCT
Finite-size effects in dynamics of zero-range processes
Juha MerikoskiOtto PulkkinenJanne Juntunensubject
Statistical Mechanics (cond-mat.stat-mech)Stochastic processCrossoverMonte Carlo methodFOS: Physical sciencesMonihiukkasmallitfaasimuutoksetMany-particle modelsphase transitionsAverage sizeCritical point (thermodynamics)transport theorykuljetusteoriaStatistical physicsCondensed Matter - Statistical MechanicsMathematicsstokastiset prosessitdescription
The finite-size effects prominent in zero-range processes exhibiting a condensation transition are studied by using continuous-time Monte Carlo simulations. We observe that, well above the thermodynamic critical point, both static and dynamic properties display fluid-like behavior up to a density {\rho}c (L), which is the finite-size counterpart of the critical density {\rho}c = {\rho}c (L \rightarrow \infty). We determine this density from the cross-over behavior of the average size of the largest cluster. We then show that several dynamical characteristics undergo a qualitative change at this density. In particular, the size distribution of the largest cluster at the moment of relocation, the persistence properties of the largest cluster and correlations in its motion are studied.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 |