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arXiv 2007.05252cond-mat.quant-gasphysics.atom-ph
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一维玻色流体中普适的shock-wave传播

Universal shock-wave propagation in one-dimensional Bose fluids

Romain Dubessy, Juan Polo, Hélène Perrin, Anna Minguzzi, Maxim Olshanii

摘要:

我们提出了一个协议,用于创建移动的,强大的色散冲击波相互作用的一维玻色流体。通过相压印使流体处于移动状态,并将其发送到箱式阱的壁上。我们证明,由此形成的冲击波振荡几个周期,是强大的热波动。我们发现,这种大振幅的动力学是普遍的整个频谱的原子间相互作用强度,从弱到强相互作用,它是完全由流体内的声速控制。我们的工作提供了一个推广的分散冲击波范例的多体制度。我们提出的冲击波是超冷原子实验所能达到的。

英文摘要:

We propose a protocol for creating moving, robust dispersive shock waves in interacting one-dimensional Bose fluids. The fluid is prepared in a moving state by phase imprinting and sent against the walls of a box trap. We demonstrate that the thus formed shock wave oscillates for several periods and is robust against thermal fluctuations. We show that this large amplitude dynamics is universal across the whole spectrum of the interatomic interaction strength, from weak to strong interactions, and it is fully controlled by the sound velocity inside the fluid. Our work provides a generalization of the dispersive-shock-wave paradigm to the many-body regime. The shock waves we propose are within reach for ultracold atom experiments.

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