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arXiv 1604.03378quant-phcond-mat.quant-gas
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简谐囚禁玻色子的非平衡热力学

Non-Equilibrium Thermodynamics of Harmonically Trapped Bosons

Miguel Ángel García-March, Thomás Fogarty, Steve Campbell, Thomas Busch, Mauro Paternostro

备注：
Short supplementary section available in source files. Close to published version. v4 included an omitted reference
发表信息：
New J. Phys. 18, 103035 (2016)
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摘要：

本文应用非平衡量子热力学的框架，研究了一维简谐势阱中猝灭小尺度玻色量子气体的物理性质。我们表明，动力学正交性可以发生在这些少体系统的强相互作用淬火后，我们发现它的发生解析为一个无限排斥的原子对。我们进一步表明，这种现象是有关的基本激发，支配的动力学从谱函数。我们在系统上执行的（不可逆）工作量和纠缠的建立之间建立了明确的定性联系。我们扩展我们的分析，多体系统通过检查的情况下，三个被困原子。我们表明，初始（预淬火）的相互作用在确定的动力学特征中发挥着至关重要的作用，而两个粒子的情况下的定性特征似乎仍然有效。最后，我们建议使用的原子密度分布作为一个容易访问的指标的非平衡性质的系统的问题。

英文摘要：

We apply the framework of non-equilibrium quantum thermodynamics to the physics of quenched small-sized bosonic quantum gases in a one-dimensional harmonic trap. We show that dynamical orthogonality can occur in these few-body systems with strong interactions after a quench and we find its occurrence analytically for an infinitely repulsive pair of atoms. We further show this phenomena is related to the fundamental excitations that dictate the dynamics from the spectral function. We establish a clear qualitative link between the amount of (irreversible) work performed on the system and the establishment of entanglement. We extend our analysis to multipartite systems by examining the case of three trapped atoms. We show the initial (pre-quench) interactions play a vital role in determining the dynamical features, while the qualitative features of the two particle case appear to remain valid. Finally, we propose the use of the atomic density profile as a readily accessible indicator of the non-equilibrium properties of the systems in question.

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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