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arXiv · 1201.1845

Microstructure of He II in the presence of boundaries

Maksim D. Tomchenko
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Abstract

We have studied the microstructure of a system of interacting Bose particles under zero boundary conditions and have found two possible orderings. One ordering is traditional and is characterized by the Bogolyubov dispersion law E^2 = (h^2 k^2/2m)^{2} + qn\nu(k)[h^2 k^2/m] (with q=1) at a weak interaction. The second one is new and is characterized by the same dispersion law, but with q=2^{-f}, where $f$ is the number of noncyclic coordinates. At a weak interaction, the ground-state energy is less for the new solution. The boundaries affect the bulk microstructure due to the difference of the topologies of closed and open systems.

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Maksim D. Tomchenko. 2012-01-09. Microstructure of He II in the presence of boundaries. https://doi.org/10.15407/ujpe59.02.0123

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