Anomalous Diffusion in Driven Electrolytes due to Hydrodynamic Fluctuations
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arXiv
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911439020621824 |
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| author | Golestanian, Ramin |
| author_facet | Golestanian, Ramin |
| contents | 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 behaviour 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 non-equilibrium steady states in ionic suspensions and produce strong fluctuations despite the presence of Debye screening. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_08478 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous Diffusion in Driven Electrolytes due to Hydrodynamic Fluctuations Golestanian, Ramin Soft Condensed Matter Statistical Mechanics Chemical Physics 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 behaviour 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 non-equilibrium steady states in ionic suspensions and produce strong fluctuations despite the presence of Debye screening. |
| title | Anomalous Diffusion in Driven Electrolytes due to Hydrodynamic Fluctuations |
| topic | Soft Condensed Matter Statistical Mechanics Chemical Physics |
| url | https://arxiv.org/abs/2510.08478 |