Bound states of dipolar bosons in one-dimensional systems

A. G. Volosniev, J. R. Armstrong, D. V. Fedorov, A. S. Jensen, M. Valiente, N. T. Zinner

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

We consider one-dimensional tubes containing bosonic polar molecules. The long-range dipole-dipole interactions act both within a single tube and between different tubes. We consider arbitrary values of the externally aligned dipole moments with respect to the symmetry axis of the tubes. The few-body structures in this geometry are determined as a function of polarization angles and dipole strength by using both essentially exact stochastic variational methods and the harmonic approximation. The main focus is on the three-, four- and five-body problems in two or more tubes. Our results indicate that in the weakly coupled limit the intertube interaction is similar to a zero-range term with a suitable rescaled strength. This allows us to address the corresponding many-body physics of the system by constructing a model where bound chains with one molecule in each tube are the effective degrees of freedom. This model can be mapped onto one-dimensional Hamiltonians for which exact solutions are known.

Original languageEnglish (US)
Article number043046
JournalNew Journal of Physics
Volume15
DOIs
StatePublished - Apr 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Volosniev, A. G., Armstrong, J. R., Fedorov, D. V., Jensen, A. S., Valiente, M., & Zinner, N. T. (2013). Bound states of dipolar bosons in one-dimensional systems. New Journal of Physics, 15, [043046]. https://doi.org/10.1088/1367-2630/15/4/043046