Collective dispersion forces in the fluid state

Dispersion interactions lead to effective many-body interactions which go beyond the approximation of pair potentials widely used in modeling of materials, leading in the continuum limit to Lifshitz theory. We introduce quantum dispersion interactions in simulations of polarizable atoms, incorporati...

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Bibliographic Details
Published in:Europhysics letters 2010-09, Vol.91 (5), p.56006
Main Authors: Berthoumieux, H, Maggs, A. C
Format: Article
Language:English
Subjects:
05.10.Ln
34.20.Cf
61.20.Ja
Approximation
Asymmetry
Computational fluid dynamics
Degrees of freedom
Dispersions
Fluctuation
Mathematical analysis
Physics
Screening
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Summary:Dispersion interactions lead to effective many-body interactions which go beyond the approximation of pair potentials widely used in modeling of materials, leading in the continuum limit to Lifshitz theory. We introduce quantum dispersion interactions in simulations of polarizable atoms, incorporating the fully summed, non-retarded Lifthitz theory in arbitrary fluctuating geometries. We sample the quantum degrees of freedom using a heat bath algorithm adapted to the polarization fluctuations of individual atoms. We demonstrate asymmetric screening of interactions in a binary fluid.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/91/56006