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

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

1999-11-14

arxiv.org/abs/cond-mat/9911210v1

Phys. Rev. A 61, 043605 (2000)

Physics

Condensed Matter

14 pages+4 figures, submitted to phys.rev.A

Scientific paper

10.1103/PhysRevA.61.043605

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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