Characterization of nonequilibrium states of trapped Bose-Einstein condensates

被引：7
|
作者：
Yukalov, V., I [1 ,2 ]
Novikov, A. N. [2 ]
Bagnato, V. S. [2 ]
机构：
[1] Joint Inst Nucl Res, Bogolubov Lab Theoret Phys, Dubna 141980, Russia
[2] Univ Sao Paulo, Inst Fis Sao Calros, CP 369, BR-13560970 Sao Carlos, SP, Brazil
来源：
LASER PHYSICS LETTERS | 2018年 / 15卷 / 06期
基金：
巴西圣保罗研究基金会;
关键词：
trapped bosons; vortex germs; vortex rings; vortex lines; vortex turbulence; grain turbulence; wave turbulence; QUANTUM TURBULENCE; FLUCTUATIONS; EXPANSION;
D O I：
10.1088/1612-202X/aa99fa
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The generation of different nonequilibrium states in trapped Bose-Einstein condensates is studied by numerically solving the nonlinear Schrodinger equation. Inducing nonequilibrium states by shaking a trap creates the following states: weak nonequilibrium, the state of vortex germs, the state of vortex rings, the state of straight vortex lines, the state of deformed vortices, vortex turbulence, grain turbulence, and wave turbulence. A characterization of nonequilibrium states is advanced by introducing effective temperature, Fresnel number, and Mach number.
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页数：8
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