Resumé
by a combination of Yukawa potentials. The present work investigates the static correlations and the thermodynamics of repulsive dense bi-
Yukawa fluids based on the fact that such strongly coupled systems exhibit isomorph invariance. The strong virial-potential energy correlations
are demonstrated with the aid of molecular dynamics simulations, an accurate analytical expression for the isomorph family of curves
is obtained, and an empirical expression for the fluid-solid phase-coexistence line is proposed. The isomorph-based empirically modified
hypernetted-chain approach, grounded on the ansatz of isomorph invariant bridge functions, is then extended to such systems and the
resulting structural properties show an excellent agreement with the results of computer simulations. A simple and accurate closed-form
expression is obtained for the excess internal energy of dense bi-Yukawa fluids by capitalizing on the compact parameterization offered by
the Rosenfeld-Tarazona decomposition in combination with the Rosenfeld scaling, which opens up the energy route to thermodynamics.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 053705 |
| Tidsskrift | Physics of Plasmas |
| Vol/bind | 2019 |
| Udgave nummer | 26 |
| Antal sider | 11 |
| ISSN | 1070-664X |
| DOI | |
| Status | Udgivet - 21 maj 2019 |
Bibliografisk note
This paper was selected as an Editor’s PickCiter dette
}
Isomorph invariance and thermodynamics of repulsive dense bi-Yukawa one-component plasmas. / Lucco Castello, Federico; Tolias, Panagiotis; Hansen, Jesper Schmidt; Dyre, Jeppe.
I: Physics of Plasmas, Bind 2019, Nr. 26, 053705, 21.05.2019.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
TY - JOUR
T1 - Isomorph invariance and thermodynamics of repulsive dense bi-Yukawa one-component plasmas
AU - Lucco Castello, Federico
AU - Tolias, Panagiotis
AU - Hansen, Jesper Schmidt
AU - Dyre, Jeppe
N1 - This paper was selected as an Editor’s Pick
PY - 2019/5/21
Y1 - 2019/5/21
N2 - In numerous realizations of complex plasmas, dust-dust interactions are characterized by two screening lengths and are thus better describedby a combination of Yukawa potentials. The present work investigates the static correlations and the thermodynamics of repulsive dense bi-Yukawa fluids based on the fact that such strongly coupled systems exhibit isomorph invariance. The strong virial-potential energy correlationsare demonstrated with the aid of molecular dynamics simulations, an accurate analytical expression for the isomorph family of curvesis obtained, and an empirical expression for the fluid-solid phase-coexistence line is proposed. The isomorph-based empirically modifiedhypernetted-chain approach, grounded on the ansatz of isomorph invariant bridge functions, is then extended to such systems and theresulting structural properties show an excellent agreement with the results of computer simulations. A simple and accurate closed-formexpression is obtained for the excess internal energy of dense bi-Yukawa fluids by capitalizing on the compact parameterization offered bythe Rosenfeld-Tarazona decomposition in combination with the Rosenfeld scaling, which opens up the energy route to thermodynamics.
AB - In numerous realizations of complex plasmas, dust-dust interactions are characterized by two screening lengths and are thus better describedby a combination of Yukawa potentials. The present work investigates the static correlations and the thermodynamics of repulsive dense bi-Yukawa fluids based on the fact that such strongly coupled systems exhibit isomorph invariance. The strong virial-potential energy correlationsare demonstrated with the aid of molecular dynamics simulations, an accurate analytical expression for the isomorph family of curvesis obtained, and an empirical expression for the fluid-solid phase-coexistence line is proposed. The isomorph-based empirically modifiedhypernetted-chain approach, grounded on the ansatz of isomorph invariant bridge functions, is then extended to such systems and theresulting structural properties show an excellent agreement with the results of computer simulations. A simple and accurate closed-formexpression is obtained for the excess internal energy of dense bi-Yukawa fluids by capitalizing on the compact parameterization offered bythe Rosenfeld-Tarazona decomposition in combination with the Rosenfeld scaling, which opens up the energy route to thermodynamics.
UR - http://glass.ruc.dk/pdf/articles/2019_Phys_Plasmas_26_053705.pdf
U2 - 10.1063/1.5100150
DO - 10.1063/1.5100150
M3 - Journal article
VL - 2019
JO - Physics of Plasmas
JF - Physics of Plasmas
SN - 1070-664X
IS - 26
M1 - 053705
ER -