Dynamic ion structure factor of warm dense matter

J. Vorberger, Z. Donko, I. M. Tkachenko, D. O. Gericke

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The dynamics of the ion structure in warm dense matter is determined by molecular dynamics simulations using an effective ion-ion potential. This potential is obtained from abinitio simulations and has a strong short-range repulsion added to a screened Coulomb potential. Models based on static or dynamic local field corrections are found to be insufficient to describe the data. An extended Mermin approach, a hydrodynamic model, and the method of moments with local constraints are capable of reproducing the numerical results but have rather limited predictive powers as they all need some numerical data as input. The method of moments is found to be the most promising.

Original languageEnglish
Article number225001
JournalPhysical review letters
Volume109
Issue number22
DOIs
Publication statusPublished - Nov 28 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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