Anomalous Diffusion in Driven Electrolytes due to Hydrodynamic Fluctuations
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.
Fields of Study & Subjects
Thermodynamic properties of mixtures
Phase Equilibria and Thermodynamics
NMR spectroscopy and applications
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 6
- Pages
- 068301–068301
- Publication date
- 15 January 2026
- Language
- EN