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Updated: Apr 15, 2026
11:03
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
9.1K
Internal noise and system size effects induce nondiffusive kink dynamics
Diego A C Contreras1, Marcel G Clerc1
1Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
Summary
This study reveals how fluctuations and system size influence domain dynamics. Monotonous kinks exhibit asymmetric random walks, while non-monotonous interfaces show hopping dynamics, confirmed by stochastic kinematic laws and simulations.
Area of Science:
- Physics
- Complex Systems
- Statistical Mechanics
Background:
- Understanding domain dynamics is crucial in various physical systems.
- Inherent fluctuations and system size significantly impact system behavior.
- Previous models often simplify interface dynamics, neglecting certain stochastic effects.
Purpose of the Study:
- To investigate the influence of inherent fluctuations and system size on domain dynamics.
- To characterize the distinct dynamics of monotonous and non-monotonous interfaces.
- To elucidate the underlying stochastic mechanisms governing these dynamics.
Main Methods:
- Development of bistable universal models.
- Application of stochastic kinematic laws for interface position and survival probability.
- Conducting numerical simulations to validate theoretical predictions.
Main Results:
- Monotonous kinks display nonsymmetric random walks, tending towards system borders.
- Non-monotonous interfaces exhibit a hopping dynamic.
- Theoretical predictions show good agreement with numerical simulation results.
Conclusions:
- Inherent fluctuations and system size introduce complex, system-dependent dynamics.
- Stochastic kinematic laws provide a framework for understanding interface behavior.
- The study offers insights into domain evolution in systems with competing states.
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