Tunneling dynamics of few bosons in a double well

Details Tunneling dynamics of few bosons in a double well Tunneling dynamics of few bosons in a double well

2008-01-07

arxiv.org/abs/0801.1090v1

Phys. Rev. A 78, 013621 (2008)

Physics

Condensed Matter

Other Condensed Matter

10 pages, 8 figures

Scientific paper

10.1103/PhysRevA.78.013621

We study few-boson tunneling in a one-dimensional double well. As we pass from weak interactions to the fermionization limit, the Rabi oscillations first give way to highly delayed pair tunneling (for medium coupling), whereas for very strong correlations multi-band Rabi oscillations emerge. All this is explained on the basis of the exact few-body spectrum and without recourse to the conventional two-mode approximation. Two-body correlations are found essential to the understanding of the different tunnel mechanisms. The investigation is complemented by discussing the effect of skewing the double well, which offers the possibility to access specific tunnel resonances

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