Formation of Dispersive Shock Waves by Merging and Splitting Bose-Einstein Condensates

被引:130
作者
Chang, J. J. [1 ]
Engels, P. [1 ]
Hoefer, M. A. [2 ]
机构
[1] Washington State Univ, Dept Phys & Astron, Pullman, WA 99164 USA
[2] Natl Inst Stand & Technol, Boulder, CO 80305 USA
关键词
D O I
10.1103/PhysRevLett.101.170404
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The processes of merging and splitting dilute-gas Bose-Einstein condensates are studied in the nonadiabatic, high-density regime. Rich dynamics are found. Depending on the experimental parameters, uniform soliton trains containing more than ten solitons or the formation of a high-density bulge as well as dispersive shock waves are observed experimentally within merged BECs. Our numerical simulations indicate the formation of many vortex rings. In the case of splitting a BEC, the transition from sound-wave formation to dispersive shock-wave formation is studied by use of increasingly stronger splitting barriers. These experiments realize prototypical dispersive shock situations.
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页数:4
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*EPAPS, EPRLTAO101067840 EPA, P80403