Abstract
We numerically investigate the self-diffusion coefficient and correlation length (i.e., the typical size of the collective motions) in sheared soft athermal particles. Here we find that the rheological flow curves on the self-diffusion coefficient are collapsed by the proximity to the jamming transition density. This feature is in common with the well-established critical scaling of flow curves on shear stress or viscosity. We furthermore reveal that the divergence of the correlation length governs the critical behavior of the diffusion coefficient, where the diffusion coefficient is proportional to the correlation length and the strain rate for a wide range of the strain rate and packing fraction across the jamming transition density.
Original language | English |
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Article number | 99 |
Journal | Frontiers in Physics |
Volume | 8 |
DOIs | |
Publication status | Published - 2020 Apr 8 |
Keywords
- correlation length
- critical scaling analysis
- diffusion coefficient
- jamming transition
- soft matter
ASJC Scopus subject areas
- Biophysics
- Materials Science (miscellaneous)
- Mathematical Physics
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry