Transport and impurity dynamics in a unitary Fermi gas

酉费米气体中的输运和杂质动力学

• 批准号: DP210101652
• 负责人: Prof Christopher Vale
• 金额: $ 30.09万
• 依托单位: Swinburne University of Technology
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2021
• 资助国家: 澳大利亚
• 起止时间: 2021-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210101652
• 关键词: Transport; impurity; dynamics; unitary; Fermi

This project aims to generate new understandings of transport and the behaviour of impurities in a gas of strongly-interacting atoms cooled to nanoKelvin temperatures. By measuring the response of a unitary Fermi gas to disturbances with well-defined momenta and energies, we will map the elementary excitations in both the superfluid and normal fluid phases. From this, the parameters that define how particles and impurities travel through the system can be determined. Our study will reveal whether the unitary Fermi gas approaches a conjectured quantum limit for perfect fluidity, examine how the properties of the gas depend on impurity concentration and establish new benchmarks for theories of strongly-correlated quantum matter.

该项目的目的是在冷却到纳米克尔文温度的强烈相互交互原子中，对运输的新理解和杂质的行为。通过测量单一费米气体对具有明确定义的动量和能量干扰的响应，我们将绘制超流体和正常流体阶段中的基本激发。由此，可以确定颗粒和杂质如何通过系统传播的参数。我们的研究将揭示统一的费米气体是否接近猜想的量子限制以达到完美的流动性，检查气体的性质如何取决于杂质浓度，并为强相关量子问题的理论建立新的基准。