Details

Autor(en) / Beteiligte

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

Titel

Bound states of dipolar bosons in one-dimensional systems

Ist Teil von

• New journal of physics, 2013-04, Vol.15 (4), p.43046-20

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2013

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.