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Condensation and interaction range in harmonic boson traps: a variational approach

J. Tempere·F. Brosens·L. F. Lemmens·J. T. Devreese
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Abstract

For a gas of N bosons interacting through a two-body Morse potential a variational bound of the free energy of a confined system is obtained. The calculation method is based on the Feynman-Kac functional projected on the symmetric representation. Within the harmonic approximation a variational estimate of the effect of the interaction range on the existence of many-particle bound states, and on the N-T phase diagram is obtained.

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J. Tempere, F. Brosens, L. F. Lemmens, J. T. Devreese. 1999-11-14. Condensation and interaction range in harmonic boson traps: a variational approach. https://doi.org/10.1103/physreva.61.043605

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