# Effective three-body interactions for bosons in a double-well confinement

@article{Dobrzyniecki2018EffectiveTI, title={Effective three-body interactions for bosons in a double-well confinement}, author={Jacek Dobrzyniecki and Xikun Li and Anne Ellerup Nielsen and Tomasz Sowi'nski}, journal={Physical Review A}, year={2018}, volume={97}, pages={013609} }

When describing the low-energy physics of bosons in a double-well potential with a high barrier between the wells and sufficiently weak atom-atom interactions, one can to a good approximation ignore the high energy states and thereby obtain an effective two-mode model. Here, we show that the regime in which the two-mode model is valid can be extended by adding an on-site three-body interaction term and a three-body interaction-induced tunneling term to the two-mode Hamiltonian. These terms…

## 11 Citations

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This work explores the dynamical behavior of the particles launched either at the single-particle ground state or saddle-point energy, in a time-independent potential, and characterization of the cross-over from diabatic to quasi-adiabatic evolution under finite-time switching of the potential barrier.

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The out-of-equilibrium quantum dynamics of an interacting Bose gas trapped in a one-dimensional asymmetric double-well potential is studied by solving the many-body Schrödinger equation numerically…

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- 2022

It is shown that interaction between bosons makes resonant tunneling phenomena in two spatial dimensions profoundly rich, and these phenomena are analyzed in terms of the loss of coherence of the junction and development of fragmentation, and coupling between transverse and longitudinal degrees-of-freedom and excitations.

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One-dimensional mixtures of several ultracold atoms: a review.

- PhysicsReports on progress in physics. Physical Society
- 2019

The recent advances on trapped Bose-Fermi mixtures are described, which allow for a theoretical combination of previous concepts, well illustrating the importance of quantum statistics and inter-particle interactions.

Control of tunneling in an atomtronic switching device

- PhysicsCommunications Physics
- 2018

The precise control of quantum systems will play a major role in the realization of atomtronic devices. As in the case of electronic systems, a desirable property is the ability to implement…

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