Extended Gibbs ensembles with flow
arXiv:0705.3743 · doi:10.1103/PhysRevE.76.051120
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.
7 pages, 4 figures
References in corpus (23)
- Hadron production in central nucleus-nucleus collisions at chemical freeze-out
- Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
- Negative heat capacity in the critical region of nuclear fragmentation: an experimental evidence of the liquid-gas phase transition
- Classification of phase transitions and ensemble inequivalence, in systems with long range interactions
- Flavor ordering of elliptic flows at high transverse momentum
- Correlated Emission of Hadrons from Recombination of Correlated Partons
- Multifragmentation process for different mass asymmetry in the entrance channel around the Fermi energy
- Bimodality: a possible experimental signature of the liquid-gas phase transition of nuclear matter
- System size dependence of elliptic flows in relativistic heavy-ion collisions
- Collective Flow in Heavy-Ion Collisions from AGS to SPS
- Temperature and energy partition in fragmentation
- What is the meaning of the statistical hadronization model?
- Some remarks on the statistical model of heavy ion collisions
- Equilibrium under flow
- Stability and instability of a hot and dilute nuclear droplet
- Non equilibrium effects in fragmentation
- Generalized Gibbs ensembles for time dependent processes
- Hadronization of Expanding QGP
- Enhancement of kinetic energy fluctuations due to expansion
- Incorporating Radial Flow in the Lattice Gas Model for Nuclear Disassembly
- Dynamics of Multifragmentation in Heavy Ion Collisions
- Flow effects on multifragmentation in the canonical model
- Dynamics and thermodynamics of fragment emission from excited sources