Work

Anomalous Diffusion in Driven Electrolytes due to Hydrodynamic Fluctuations

Year: 2026

Type: article

Abstract: The stochastic dynamics of tracers arising from hydrodynamic fluctuations in a driven electrolyte is studied using a self-consistent field-theory framework in all dimensions. A plethora of scaling behavior that includes two distinct regimes of anomalous diffusion is found, and the crossovers between them are characterized in terms of the different tuning parameters. A short-time ballistic regime is found to be accessible beyond two dimensions, whereas a long-time diffusive regime is found to be present only at four dimensions and above. The results showcase how long-ranged hydrodynamic interactions can dominate the dynamics of nonequilibrium steady states in ionic suspensions and produce strong fluctuations despite the presence of Debye screening.

Source: Physical Review Letters

DOI: 10.1103/jvmh-6j8z

Author: Ramin Golestanian

Institutions: University of Oxford, Max Planck Institute for Dynamics and Self-Organization

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: Bundesministerium für Bildung und Forschung, Max-Planck-Gesellschaft