Molecular Dynamics Simulations
strongly correlated weakly degenerate one-component plasma
- Computation of Thermodynamic (equilibrium) quantities: pressure, energy, pair distributions etc.
- Computation of dynamic properties: density-density correlation function, dynamic structure factor etc.
- Peaks of the Structure factor yield the optical plasmon dispersion
- Classical molecular dynamics rigorously describes strongly correlated systems
- Using effective quantum pair potentials (Kelbg potential), quantum effects can be "built in"
Langmuir (optical) plasmon dispersion of correlated electrons
The dashed line is what standard linearized Vlasov theory (RPA) predicts
Figures show the plasmon dispersion for varying strength of the coupling parameter,
Gamma=mean Coulomb energy/kinetic energy.
1. Weakly correlated plasma:
2. Intermediate correlation strength:
3. Strong correlations:
Plasmon frequency in units of the optical plasma frequency vs. wave number in units
of the mean interparticle distance
Damping of Langmuir waves of correlated electrons
lowest curve is the prediction of linearized Vlasov theory
Simulation results by Vova Golubnichiy, 2000.
For details, see
our recent publication
For a brief explanation of the principles of the simulations, click
Research Results |
Back to main page |