Linear and quadratic static response functions and structure functions in Yukawa liquids

Péter Magyar, Z. Donkó, Gabor J. Kalman, Kenneth I. Golden

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We compute linear and quadratic static density response functions of three-dimensional Yukawa liquids by applying an external perturbation potential in molecular dynamics simulations. The response functions are also obtained from the equilibrium fluctuations (static structure factors) in the system via the fluctuation-dissipation theorems. The good agreement of the quadratic response functions, obtained in the two different ways, confirms the quadratic fluctuation-dissipation theorem. We also find that the three-point structure function may be factorizable into two-point structure functions, leading to a cluster representation of the equilibrium triplet correlation function.

Original languageEnglish
Article number023102
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume90
Issue number2
DOIs
Publication statusPublished - Aug 11 2014

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Structure-function
Response Function
Molecular Dynamics Simulation
Fluctuation-dissipation Theorem
Liquid
liquids
Structure Factor
Quadratic Function
Density Function
dissipation
theorems
Correlation Function
Fluctuations
Perturbation
Three-dimensional
molecular dynamics
perturbation
simulation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Medicine(all)

Cite this

Linear and quadratic static response functions and structure functions in Yukawa liquids. / Magyar, Péter; Donkó, Z.; Kalman, Gabor J.; Golden, Kenneth I.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 90, No. 2, 023102, 11.08.2014.

Research output: Contribution to journalArticle

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