Variational approach to Yukawa fluids. I. Thermodynamics
arXiv:2607.25908 · doi:10.1103/kvnp-nf1l
Abstract
The excess energy, entropy, and pressure of a strongly coupled Yukawa fluid are calculated from the variational approach using the fluid of hard spheres as a reference system. As in the case of the one-component plasma, the Percus-Yevick virial entropy is appropriate for such calculations and delivers remarkable agreement with available results from molecular dynamics simulations. The agreement with the molecular-dynamics results is particularly impressive in the strongly coupled regime, making this approach a useful predictive tool when numerical data are scarce or not yet available. As an application of the variational approach, we estimate the location of the melting curve in the regime of sufficiently strong screening.
9 pages, 7 figures
References in corpus (13)
- Practical expressions for the internal energy and pressure of Yukawa fluids
- Collisional Effects on Nonlinear Ion Drag Force for Small Grains
- Practical thermodynamics of Yukawa systems at strong coupling
- Ion sphere model for Yukawa systems (dusty plasmas)
- The Rosenfeld-Tarazona expression for liquids' specific heat: A numerical investigation of eighteen systems
- Revealing the supercritical dynamics of dusty plasmas and their liquid-like to gas-like dynamical crossover
- Fcc-bcc transition for Yukawa interactions determined by applied strain deformation
- Glass-Transition Properties from Hard Spheres to Charged Point Particles
- Excess entropy of strongly coupled Yukawa fluids
- Generalized Rosenfeld-Tarazona scaling and high-density specific heat of simple liquids
- Speed of sound in dense simple liquids
- Heat capacity of dense liquids: A link between two-phase model and melting temperature scaling
- Variational approach to Yukawa fluids. II. Instantaneous elastic moduli and sound velocities