Separation induced resonances in quasi-one-dimensional ultracold atomic gases
Abstract
We study the effective one-dimensional (1D) scattering of two distinguishable atoms confined individually by {\em separated} transverse harmonic traps. With equal trapping frequency for two s-wave interacting atoms, we find that by tuning the trap separations, the system can undergo {\em double} 1D scattering resonance, named as the separation induced resonance(SIR), when the ratio between the confinement length and s-wave scattering length is within . Near SIR, the scattering property shows unique dependence on the resonance position. The universality of a many-body system on scattering branch near SIR is demonstrated by studying the interaction effect of a localized impurity coupled with a Fermi sea of light atoms in a quasi-1D trap.
Keywords
Cite
@article{arxiv.1106.5604,
title = {Separation induced resonances in quasi-one-dimensional ultracold atomic gases},
author = {Wenbo Fu and Zhenhua Yu and Xiaoling Cui},
journal= {arXiv preprint arXiv:1106.5604},
year = {2012}
}
Comments
8 pages, 6 figures, published version