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arXiv 1906.06115cond-mat.quant-gas
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磁原子玻色气体中偶极-偶极相互作用的转动调谐

Rotational tuning of the dipole-dipole interaction in a Bose gas of magnetic atoms

D. Baillie, P. B. Blakie

摘要:

研究了磁原子的玻色-爱因斯坦凝聚体的动力学,其中磁原子的偶极在外加磁场的作用下发生旋转。原子之间的时间平均偶极-偶极相互作用被这种旋转有效地调谐,然而最近的实验和理论发展表明,动态不稳定性的出现可能会导致加热。我们提出了一个现实的调谐序列在这个系统中的模拟,并表征系统的行为和出现的不稳定性。我们的研究结果表明,随着旋转频率的增加,不稳定性的发展更缓慢,并表明调谐偶极-偶极相互作用的实验应该是可行的。

英文摘要:

We investigate the dynamics of a Bose-Einstein condensate of magnetic atoms in which the dipoles are rotated by an external magnetic field. The time-averaged dipole-dipole interaction between the atoms is effectively tuned by this rotation, however recent experimental and theoretical developments show that dynamic instabilities emerge that may cause heating. We present simulations of a realistic tuning sequence in this system, and characterize the system behavior and the emergence of instabilities. Our results indicate that the instabilities develop more slowly as the rotation frequency increases, and indicate that experiments with tuned dipole-dipole interactions should be feasible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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