Shock waves in a one-dimensional Bose gas: From a Bose-Einstein condensate to a Tonks gas

被引：35
|
作者：
Damski, B [1 ]
机构：
[1] Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA
来源：
PHYSICAL REVIEW A | 2006年 / 73卷 / 04期
关键词：
D O I：
10.1103/PhysRevA.73.043601
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We derive and analyze shock-wave solutions of hydrodynamic equations describing repulsively interacting one-dimensional Bose gas. We also use the number-conserving Bogolubov approach to verify accuracy of the Gross-Pitaevskii equation in shock wave problems. We show that quantum corrections to dynamics of shocks (dark-shock-originated solitons) in a Bose-Einstein condensate are negligible (important) for a realistic set of system parameters. We point out possible signatures of a Bose-Einstein condensate-Tonks crossover in shock dynamics. Our findings can be directly verified in different experimental setups.
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页数：10
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