Probing out of equilibrium properties of strongly correlated cold atoms

探究强相关冷原子的平衡性质

• 批准号: EP/D072514/1
• 负责人: Dimitri Gangardt
• 金额: $ 49.51万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD072514%2F1
• 关键词: Probing; out; equilibrium; properties; strongly

This proposal concerns the dynamical phenomena in cold atomic gases. Theobjective is to use these clean and controllable systems for understandingthe dynamical response of very cold interacting many body systems to a suddenchange of physical parameters driving the system out of equilibrium.The objects of this study will be bosonic and fermionic ultra-cold atoms inoptical lattices. The inhomogeneous density profile due to harmonicconfinement leads to coexistence of quantum phases and results in richdynamical response. An important case concerns atomic systems in lowdimensions. Here analytical results are for dynamics are expected by usingthe exact method of statistical physics, such as Bethe Ansatz. Finally, thesestudies will include atoms moving in disordered environment. Theunprecedented control on the distribution of disorder and atomic interactionswill shed light on the long standing problem of disordered bosons and provideconnection with condensed matter physics. Aside from the fundamental interest in studying non-equilibrium quantum manybody systems this project will provide links to current experimental studiesof cold atoms and eventually will result in possible applications in the areaof precise measurements, atomic waveguides and quantum informationprocessing.

这个建议涉及冷原子气体中的动力学现象。我们的目标是利用这些干净可控的系统来理解非常冷的相互作用多体系统对物理参数突然变化的动力学响应，使系统脱离平衡，我们的研究对象是光学晶格中的玻色子和费米子超冷原子。由于谐振子的限制，密度分布不均匀，导致了量子相位的共存，从而产生了丰富的动力学响应。一个重要的例子是关于低维的原子系统。在这里，动力学的分析结果是通过使用统计物理的精确方法，如Bethe Answer。最后，这些研究将包括原子在无序环境中的运动。对无序分布和原子相互作用的前所未有的控制将揭示长期存在的无序玻色子问题，并提供与凝聚态物理的联系。除了研究非平衡量子多体系统的基本兴趣之外，该项目还将提供与当前冷原子实验研究的联系，并最终将导致在精确测量、原子波导和量子信息处理领域的可能应用。

项目成果

Doublon relaxation in the Bose-Hubbard model

Bose-Hubbard 模型中的 Doublon 弛豫

• DOI: 10.48550/arxiv.1104.5210
• 发表时间: 2011
• 作者: Chudnovskiy A

Dynamics and Bloch oscillations of mobile impurities in one-dimensional quantum liquids

一维量子液体中移动杂质的动力学和布洛赫振荡

• DOI: 10.48550/arxiv.1105.6136
• 发表时间: 2011
• 作者: Schecter M

Doublon relaxation in the Bose-Hubbard model.

• DOI: 10.1103/physrevlett.108.085302
• 发表时间: 2011-04
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: A. Chudnovskiy;D. Gangardt;A. Kamenev

Critical velocity of a mobile impurity in one-dimensional quantum liquids.

一维量子液体中移动杂质的临界速度。

• DOI: 10.1103/physrevlett.108.207001
• 发表时间: 2012
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Schecter M

Correlations in an expanding gas of hard-core bosons

硬核玻色子膨胀气体的相关性

• DOI: 10.48550/arxiv.0709.2374
• 发表时间: 2007
• 作者: Gangardt D