Advanced

Ground-state properties of few dipolar bosons in a quasi-one-dimensional harmonic trap

Deuretzbacher, F.; Cremon, Jonas LU and Reimann, Stephanie LU (2010) In Physical Review A (Atomic, Molecular and Optical Physics) 81(6).
Abstract
We study the ground state of few bosons with repulsive dipole-dipole interaction in a quasi-one-dimensional harmonic trap by means of the exact diagonalization method. Up to three interaction regimes are found, depending on the strength of the dipolar interaction and the ratio of transverse to axial oscillator lengths: a regime where the dipolar Bose gas resembles a system of weakly delta-interacting bosons, a second regime where the bosons are fermionized, and a third regime where the bosons form a Wigner crystal. In the first two regimes, the dipole-dipole potential can be replaced by a delta potential. In the crystalline state, the overlap between the localized wave packets is strongly reduced and all the properties of the boson system... (More)
We study the ground state of few bosons with repulsive dipole-dipole interaction in a quasi-one-dimensional harmonic trap by means of the exact diagonalization method. Up to three interaction regimes are found, depending on the strength of the dipolar interaction and the ratio of transverse to axial oscillator lengths: a regime where the dipolar Bose gas resembles a system of weakly delta-interacting bosons, a second regime where the bosons are fermionized, and a third regime where the bosons form a Wigner crystal. In the first two regimes, the dipole-dipole potential can be replaced by a delta potential. In the crystalline state, the overlap between the localized wave packets is strongly reduced and all the properties of the boson system equal those of its fermionic counterpart. The transition from the Tonks-Girardeau gas to the solidlike state is accompanied by a rapid increase of the interaction energy and a considerable change of the momentum distribution, which we trace back to the different short-range correlations in the two interaction regimes. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
81
issue
6
publisher
American Physical Society (APS)
external identifiers
  • wos:000278605600012
  • scopus:77953481385
ISSN
1050-2947
DOI
10.1103/PhysRevA.81.063616
language
English
LU publication?
yes
id
234c1976-e059-4b9c-95f6-fe163ab7a8ca (old id 1630849)
date added to LUP
2010-07-21 13:59:47
date last changed
2018-07-08 03:01:17
@article{234c1976-e059-4b9c-95f6-fe163ab7a8ca,
  abstract     = {We study the ground state of few bosons with repulsive dipole-dipole interaction in a quasi-one-dimensional harmonic trap by means of the exact diagonalization method. Up to three interaction regimes are found, depending on the strength of the dipolar interaction and the ratio of transverse to axial oscillator lengths: a regime where the dipolar Bose gas resembles a system of weakly delta-interacting bosons, a second regime where the bosons are fermionized, and a third regime where the bosons form a Wigner crystal. In the first two regimes, the dipole-dipole potential can be replaced by a delta potential. In the crystalline state, the overlap between the localized wave packets is strongly reduced and all the properties of the boson system equal those of its fermionic counterpart. The transition from the Tonks-Girardeau gas to the solidlike state is accompanied by a rapid increase of the interaction energy and a considerable change of the momentum distribution, which we trace back to the different short-range correlations in the two interaction regimes.},
  author       = {Deuretzbacher, F. and Cremon, Jonas and Reimann, Stephanie},
  issn         = {1050-2947},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Ground-state properties of few dipolar bosons in a quasi-one-dimensional harmonic trap},
  url          = {http://dx.doi.org/10.1103/PhysRevA.81.063616},
  volume       = {81},
  year         = {2010},
}