Static and dynamic correlations in fluids with internal quantum states: Computer simulations and theory

P. De Smedt, P. Nielaba, J. L. Lebowitz, J. Talbot, L. Dooms

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We continue our investigation of the properties of a model fluid whose molecules have classical translational degrees of freedom and two quantum internal states. The attractive pair interactions are turned on when the internal states are hybridized, corresponding to the molecules acquiring a dipole moment. The phase diagram of this system in the temperature-density plane as well as the static and imaginary-time correlations at various densities are investigated by Monte Carlo simulations, using the polymer representation, for different strengths of the quantum parameter. These are compared with low-density expansions and mean-field-theory predictions. Good agreement is found in appropriate regimes.

Original languageEnglish (US)
Pages (from-to)1381-1394
Number of pages14
JournalPhysical Review A
Volume38
Issue number3
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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