Strong pressure-energy correlations in van der Waals liquids

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Strong correlations between equilibrium fluctuations of the configurational parts of pressure and energy
are found in computer simulations of the Lennard-Jones liquid and other simple liquids, but not for
hydrogen-bonding liquids such as methanol and water. The correlations that are present also in the crystal
and glass phases reflect an effective inverse power-law repulsive potential dominating fluctuations, even at
zero and slightly negative pressure. In experimental data for supercritical argon, the correlations are found
to be approximately 96%. Consequences for viscous liquid dynamics are discussed.
OriginalsprogEngelsk
TidsskriftPhysical Review Letters
Vol/bind100
Udgave nummer1
Antal sider4
ISSN0031-9007
DOI
StatusUdgivet - 2008

Bibliografisk note

Paper id:: 015701

Citer dette

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title = "Strong pressure-energy correlations in van der Waals liquids",
abstract = "Strong correlations between equilibrium fluctuations of the configurational parts of pressure and energyare found in computer simulations of the Lennard-Jones liquid and other simple liquids, but not forhydrogen-bonding liquids such as methanol and water. The correlations that are present also in the crystaland glass phases reflect an effective inverse power-law repulsive potential dominating fluctuations, even atzero and slightly negative pressure. In experimental data for supercritical argon, the correlations are foundto be approximately 96{\%}. Consequences for viscous liquid dynamics are discussed.",
author = "Pedersen, {Ulf R{\o}rb{\ae}k} and Nicholas Bailey and Thomas Schr{\o}der and Dyre, {J. C.}",
note = "Paper id:: 015701",
year = "2008",
doi = "10.1103/PhysRevLett.100.015701",
language = "English",
volume = "100",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
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}

Strong pressure-energy correlations in van der Waals liquids. / Pedersen, Ulf Rørbæk; Bailey, Nicholas; Schrøder, Thomas; Dyre, J. C.

I: Physical Review Letters, Bind 100, Nr. 1, 2008.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Strong pressure-energy correlations in van der Waals liquids

AU - Pedersen, Ulf Rørbæk

AU - Bailey, Nicholas

AU - Schrøder, Thomas

AU - Dyre, J. C.

N1 - Paper id:: 015701

PY - 2008

Y1 - 2008

N2 - Strong correlations between equilibrium fluctuations of the configurational parts of pressure and energyare found in computer simulations of the Lennard-Jones liquid and other simple liquids, but not forhydrogen-bonding liquids such as methanol and water. The correlations that are present also in the crystaland glass phases reflect an effective inverse power-law repulsive potential dominating fluctuations, even atzero and slightly negative pressure. In experimental data for supercritical argon, the correlations are foundto be approximately 96%. Consequences for viscous liquid dynamics are discussed.

AB - Strong correlations between equilibrium fluctuations of the configurational parts of pressure and energyare found in computer simulations of the Lennard-Jones liquid and other simple liquids, but not forhydrogen-bonding liquids such as methanol and water. The correlations that are present also in the crystaland glass phases reflect an effective inverse power-law repulsive potential dominating fluctuations, even atzero and slightly negative pressure. In experimental data for supercritical argon, the correlations are foundto be approximately 96%. Consequences for viscous liquid dynamics are discussed.

U2 - 10.1103/PhysRevLett.100.015701

DO - 10.1103/PhysRevLett.100.015701

M3 - Journal article

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 1

ER -