Extended Gibbs ensembles with flow
Statistical Mechanics
2008-02-01 v1 Nuclear Theory
Abstract
A statistical treatment of finite unbound systems in the presence of collective motions is presented and applied to a classical Lennard-Jones Hamiltonian, numerically simulated through molecular dynamics. In the ideal gas limit, the flow dynamics can be exactly re-casted into effective time-dependent Lagrange parameters acting on a standard Gibbs ensemble with an extra total energy conservation constraint. Using this same ansatz for the low density freeze-out configurations of an interacting expanding system, we show that the presence of flow can have a sizeable effect on the microstate distribution.
Cite
@article{arxiv.0705.3743,
title = {Extended Gibbs ensembles with flow},
author = {M. J. Ison and F. Gulminelli and C. Dorso},
journal= {arXiv preprint arXiv:0705.3743},
year = {2008}
}