Quasi-one-dimensional Bose gases with large scattering length
Soft Condensed Matter
2009-11-10 v1
Abstract
Bose gases confined in highly-elongated harmonic traps are investigated over a wide range of interaction strengths using quantum Monte Carlo techniques. We find that the properties of a Bose gas under tight transverse confinement are well reproduced by a 1d model Hamiltonian with contact interactions. We point out the existence of a unitary regime, where the properties of the quasi-1d Bose gas become independent of the actual value of the 3d scattering length. In this unitary regime, the energy of the system is well described by a hard rod equation of state. We investigate the stability of quasi-1d Bose gases with positive and negative 3d scattering length.
Cite
@article{arxiv.cond-mat/0308585,
title = {Quasi-one-dimensional Bose gases with large scattering length},
author = {G. E. Astrakharchik and D. Blume and S. Giorgini and B. E. Granger},
journal= {arXiv preprint arXiv:cond-mat/0308585},
year = {2009}
}
Comments
5 pages, 3 figures