Mapping out the quasi-condensate transition through the 1D-3D dimensional crossover
Quantum Gases
2011-03-16 v2
Abstract
By measuring the density fluctuations in a highly elongated weakly interacting Bose gas, we observe and quantify the transition from the ideal gas to a quasi-condensate regime throughout the dimensional crossover from a purely 1D to an almost 3D gas. We show that that the entire transition region and the dimensional crossover are described surprisingly well by the modified Yang-Yang model. Furthermore, we find that at low temperatures the linear density at the quasi-condensate transition scales according to an interaction-driven scenario of a longitudinally uniform 1D Bose gas, whereas at high temperatures it scales according to the degeneracy-driven critical scenario of transverse condensation of a 3D ideal gas.
Cite
@article{arxiv.1011.3631,
title = {Mapping out the quasi-condensate transition through the 1D-3D dimensional crossover},
author = {Julien Armijo and Thibaut Jacqmin and Karen Kheruntsyan and Isabelle Bouchoule},
journal= {arXiv preprint arXiv:1011.3631},
year = {2011}
}