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Open Quantum Systems Decoherence Quantum Simulation

Trapped Bose gases with large positive scattering length

arXiv
Authors: M. Thøgersen, D. V. Fedorov, A. S. Jensen

Year

2007

Paper ID

49885

Status

Preprint

Abstract Read

~2 min

Abstract Words

105

Citations

N/A

Abstract

We calculate the energy and the condensate fraction of a system of trapped bosons interacting via a short-range two-body potential with positive scattering length. The potential is attractive and has a two-body bound state. When the scattering length is small compared to the trap length the system is model independent: all potential models - attractive, repulsive and zero-range - provide similar results. When the scattering length is large the attractive model differs qualitatively from the repulsive and zero-range models. In this regime the system with attractive potential becomes independent of the scattering length, with both the energy and the condensate fraction converging towards finite constants.

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  • We calculate the energy and the condensate fraction of a system of trapped bosons interacting via a short-range two-body potential with positive scattering length.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0706.3300 [2] arXiv https://arxiv.org/abs/0706.3300 [3] Publisher https://arxiv.org/abs/0706.3300

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