Crossover in the Slow Decay of Dynamic Correlations in the Lorentz Model
| dc.creator | Höfling, Felix | |
| dc.creator | Franosch, Thomas | |
| dc.date | 2007-01-26 | |
| dc.date | 2007-02-27 | |
| dc.date.accessioned | 2026-07-07T07:56:36Z | |
| dc.date.available | 2026-07-07T07:56:36Z | |
| dc.description | The long-time behavior of transport coefficients in a model for spatially heterogeneous media in two and three dimensions is investigated by Molecular Dynamics simulations. The behavior of the velocity auto-correlation function is rationalized in terms of a competition of the critical relaxation due to the underlying percolation transition and the hydrodynamic power-law anomalies. In two dimensions and in the absence of a diffusive mode, another power law anomaly due to trapping is found with an exponent -3 instead of -2. Further, the logarithmic divergence of the Burnett coefficient is corroborated in the dilute limit; at finite density, however, it is dominated by stronger divergences. | |
| dc.description | Full-length paragraph added that exemplifies the relevance for dense fluids and makes a connection to recently observed, novel long-time tails in a hard-sphere fluid | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0701659 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0701659 | |
| dc.identifier | Phys. Rev. Lett. 98, 140601 (2007) | |
| dc.identifier | doi:10.1103/PhysRevLett.98.140601 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/127366 | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Crossover in the Slow Decay of Dynamic Correlations in the Lorentz Model | |
| dc.type | text |