Fluid Dynamics in Uniform Fermi Gases

均匀费米气体中的流体动力学

基本信息

批准号：
2006234
负责人：
John Thomas
金额：
$ 60.02万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-08-01 至 2024-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2006234&HistoricalAwards=false
关键词：
Fluid Dynamics Uniform Fermi Gases

项目摘要

General audience abstractThis project will explore nearly perfect fluid flow in a “designer” quantum system, comprising a unique ultracold gas of atoms, contained in a box made entirely of laser light. The atoms used in these tabletop experiments feature experimentally adjustable attraction or repulsion, from very weak to very strong, enabling measurements that impact theories in intellectual disciplines well outside of atomic physics. The contained atoms model new materials, such as super-high temperature superconductors that operate far above room temperature, which will one day enable energy-saving power lines and magnetically levitated trains. Students and post-doctoral associates will design new optical systems, new computer control and mechanical systems, and study electrodynamics and quantum mechanics, broadly training them for challenges arising in science and technology.Technical audience abstractThe experiments will study the fluid dynamics of a Fermi gas of Li-6 atoms near a collisional (Feshbach) resonance, which enables magnetic control of atom-atom interactions. The ultracold Fermi gas is contained, perturbed, and imaged in a designer optical potential, which is generated using two digital micro-mirror arrays. By imaging the atom density profile as a function of time, the new experiments will measure the hydrodynamic linear response and transport properties as a function of temperature, interaction strength, and spin-imbalance. Imaging the trapped cloud in a 1D linearly varying potential will determine the equation of state. Designer optical potentials also will be used for in-situ imaging of shock waves as a function of interaction strength, density profile and temperature profile.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

摘要的原子完全由激光光制成建模新材料，例如超过室温电源线和磁性悬浮的列车的超高温度导体。 Broady培训他们在科学和技术中引起的挑战。包含，扰动和成像在设计器的选项中，该选项使用两个数字微型摩尔阵列脱落，作为时间耳朵响应和运输属性，如ASP温度一样，将其成像线性变化的潜力遗嘱也将用于涉及波浪的波浪，其相互作用强度，密度曲线和温度曲线的功能。该奖项反映了NSF'Sf'sf'sf'sf'sf'sfly fly Mission，并被视为值得通过的支持。使用Toundation的智力优点和更广泛的影响审查标准进行评估。