Dynamics of an Ultracold Bose Gas in Funnel-Shaped Potential

In this paper we develop a variational theory to study the dynamic properties of ultracold Bose gas in a funnel external potential. We obtain one-dimensional nonlinear equation which describes the dynamics of transverse tight confined bosonic gas from three-dimension to one-dimension, and find one-d...

Full description

Saved in:
Bibliographic Details
Published in:Communications in theoretical physics 2009-09, Vol.52 (9), p.431-434
Main Author: YAN Li XU Guang-Yuan WANG Yong-Jun LIU Xian-Feng HAN Jiu-Rong
Format: Article
Language:English
Subjects:
Bose场
动力学方程
动态特性
超冷玻色气体
非线性方程
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper we develop a variational theory to study the dynamic properties of ultracold Bose gas in a funnel external potential. We obtain one-dimensional nonlinear equation which describes the dynamics of transverse tight confined bosonic gas from three-dimension to one-dimension, and find one-dimensional s-wave scattering length which depends on the shape of transverse confining potential. If the funnel trapping potential is strong enough at zero temperature, all transverse excitations are frozen. We find the dynamic equation which describes the Tonks-Girardeau gas and present a qualitative analysis of the experimental accessibility of the Tonks Girardeau gas with funnel-trapped alkalic atoms.
ISSN:0253-6102
DOI:10.1088/0253-6102/52/3/10