Microscopic Description of Strongly Correlated Bose and Fermi Gases

强相关玻色和费米气体的微观描述

• 批准号: 0855332
• 负责人: Doerte Blume
• 金额: $ 18.33万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855332&HistoricalAwards=false
• 关键词: Microscopic; Description; Strongly; Correlated; Bose

Over the past few years the field of cold atom physics has entered a new regime. The strength of the atom-atom interactions in different partial wave channels and the confining geometry can now be controlled essentially at will. These developments open the possibility to answer pressing atomic physics questions and to exploit cold atom systems for the study of condensed matter and nuclear physics analogs. Furthermore, these recent break-throughs are crucial for utilizing cold atom systems in quantum computation applications and as quantum simulators. While much progress has been made towards these goals, many open questions remain. From the theoretical point of view, a key challenge consists in developing accurate descriptions of strongly-correlated systems. A multi-faceted microscopic approach will be used that aims at treating strongly-correlated few- and many-particle systems with high accuracy. Three systems that have become experimentally accessible during the past one or two years will be investigated: i) three-component Fermi gases,ii) p-wave interacting Fermi gases, andiii) dipolar Bose and Fermi gases.The theoretical results will be directly relevant to optical lattice experiments that operate in the low-tunneling regime. Additionally, systems consisting of multiple lattice sites will be considered. The anticipated results for two-site systems will provide guidance for many-body studies of homogeneous and inhomogeneous systems. The many-body studies are expected to provide a host of benchmark results that will be of interest to theorists and experimentalists alike. The work will benefit science education infrastructure in a number of important ways beyond the direct improvements to the understanding of cold atom gases.

在过去的几年中，冷原子物理学领域已经进入了新的政权。现在，可以随意控制不同部分波通道和限制几何形状中原子原子相互作用的强度。这些发展为回答压迫原子物理问题的可能性开辟了可能性，并利用冷原子系统来研究冷凝物和核物理类似物。此外，这些最近的突破对于在量子计算应用中利用冷原子系统和作为量子模拟器至关重要。尽管对这些目标取得了很大进展，但仍有许多公开问题。从理论的角度来看，一个关键挑战包括开发对密切相关系统的准确描述。将使用一种多面微观方法，旨在以高精度处理强相关的少数和多粒子系统。将研究在过去一两年中可以在实验上访问的三个系统：i）三组分的费米气体，ii）P-波 - p波相互作用的费米气体，andiii）偶性玻璃和费米气体。理论结果将与低接收性机制的光学晶格实验直接相关。此外，将考虑由多个晶格站点组成的系统。两端系统的预期结果将为多体均匀和不均匀系统的多体研究提供指导。预计多体研究将提供许多基准结果，这些结果将引起理论家和实验者的感兴趣。这项工作将以多种重要方式使科学教育基础设施受益，而不是对冷原子气体的直接改善。