Dispersion relations of Yukawa fluids at weak and moderate coupling

Abstract

In this paper we compare different theoretical approaches to describe the dispersion of collective modes in Yukawa fluids when the inter-particle coupling is relatively weak, so that kinetic and potential contributions to the dispersion relation compete. Thorough comparison with the results from molecular dymamics simulation allows us to conclude that in the regime investigated the best description is provided by the sum of the generalized excess bulk modulus and the Bohm-Gross kinetic term.

9 pages, 7 figures

References in corpus (10)

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Cited by in corpus (6)

• Electronic Density Response of Warm Dense Matter
• Description of longitudinal modes in moderately coupled Yukawa systems with the static local field correction
• Quasi-localized charge approximation approach for the nonlinear structures in strongly coupled Yukawa systems
• Variational principles for the hydrodynamics of the classical one-component plasma
• 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