论文标题
当前的环状凝结液生产较弱
Current production in ring condensates with a weak link
论文作者
论文摘要
我们认为，通过弱环节搅动的环陷阱中的有吸引力和排斥的冷凝物，并通过波函数，能量和电流的分析表达式分析了被链路拖动的孤子列。研究了当前生产和破坏在环中的缺陷形成和搅拌方面的精确演变。我们发现，任何激发状态都可以通过两种建议的方法耦合到基态：通过精确调整链路的强度和速度通过精确的循环来避免临界速度和不稳定的区域，或者通过保持辅助电位并保持非线性相位，以避免链接保持不稳定。我们还通过能量和电流的光谱分析了磁滞周期。
We consider attractive and repulsive condensates in a ring trap stirred by a weak link, and analyze the spectrum of solitonic trains dragged by the link, by means of analytical expressions for the wave functions, energies and currents. The precise evolution of current production and destruction in terms of defect formation in the ring and in terms of stirring is studied. We find that any excited state can be coupled to the ground state through two proposed methods: either by adiabatically tuning the link's strength and velocity through precise cycles which avoid the critical velocities and thus unstable regions, or by keeping the link still while setting an auxiliary potential and imprinting a nonlinear phase as the potential is turned off. We also analyze hysteresis cycles through the spectrum of energies and currents.
