Large fluctuations in non-ideal coarse-grained systems
Computational Physics
2020-07-01 v3 Mesoscale and Nanoscale Physics
Abstract
Using the recently introduced Molecular Dynamics Lattice Gas (MDLG) approach, we test fluctuations of coarse-grained quantities. We show that as soon as the system can no longer be considered an ideal gas fluctuations fail to diminish upon coarse-graining as is usually expected. These results suggest that current approaches to simulating fluctuating hydrodynamics may have to be augmented to achieve quantitative results for systems with a non-ideal equation of state. The MDLG method gives a guidance to the exact nature of the fluctuation in such systems.
Cite
@article{arxiv.1905.07611,
title = {Large fluctuations in non-ideal coarse-grained systems},
author = {M. Reza Parsa and Alexander J. Wagner},
journal= {arXiv preprint arXiv:1905.07611},
year = {2020}
}
Comments
5 pages 3 figures