Coexisting crystal and liquid-like properties in a 2D long-range self-consistent model

A two-dimensional class of mean-field models serving as a minimal frame to study long-range interaction in two space dimensions is considered. In the case of an anisotropic mixed attractive-repulsive interaction, an initially spatially homogeneous cold fluid is dynamically unstable and evolves towar...

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Bibliographic Details
Published inScientific reports Vol. 8; no. 1; pp. 15800 - 10
Main Authors Maciel, J. M., Amato, M. A., Firpo, M. -C.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 25.10.2018
Nature Publishing Group
Nature Portfolio
Subjects
639/766/119/1002
639/766/530/2804
Atoms & subatomic particles
Cold
Condensed Matter
Crystal structure
Crystalline Background
Equilibrium
Humanities and Social Sciences
Liquid-Like Features
Mimicry
multidisciplinary
Physics
Quasi-static Conditions (QSS)
Repulsive Direction
Science
Science (multidisciplinary)
Simulation
Statistical Mechanics
Transposition
Violent Relaxation
Repulsive Direction
Crystalline Background
Liquid-Like Features
Violent Relaxation
Quasi-static Conditions (QSS)
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Summary:A two-dimensional class of mean-field models serving as a minimal frame to study long-range interaction in two space dimensions is considered. In the case of an anisotropic mixed attractive-repulsive interaction, an initially spatially homogeneous cold fluid is dynamically unstable and evolves towards a quasi-stationary state in which the less energetic particles get trapped into clusters forming a Bravais-like lattice, mimicking a crystalline state. Superimposed to this, one observes in symplectic numerical simulations a flux of slightly more energetic particles channeling through this crystalline background. The resultant system combines the rigidity features of a solid, as particles from a displaced core are shown to snap back into place after a transient, and the dynamical diffusive features of a liquid for the fraction of channeling and free particles. The combination of solid and liquid properties is numerically observed here within the classical context. The quantum transposition of the model may be experimentally reached using the latest ultracold atoms techniques to generate long-range interactions.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-33889-8