强相互作用的超冷费米气体是研究复杂多体强关联物理的理想系统，可以用来研究高温超导超流、夸克-胶子等离子体、中子星以及宇宙的早期演化等多体强关联物理。通过精确控制原子间的相互作用以及外加的俘获势，可以探索超冷量子物质的奇异物相，研究强耦合系统中的量子非平衡热力学、超冷碰撞和多体物理。文章介绍了华东师范大学精密光谱科学与技术国家重点实验室超冷量子气体研究组近期在标度不变的费米气体中的一些研究进展，如 Efimovian 膨胀动力学等
新奇动力学和多体量子热机等。

An ultracold Fermi gas provides an ideal system to study many-body physics. It could be used as a remarkable test-bed to study many strongly-coupled phenomena, such as high-temperature superconductors, quark-gluon plasma and neutron stars. The ability of precisely controllable interactions and external potential enables us to explore the exotic phase with quantum matter, investigate the quantum non-equilibrium thermodynamics, ultracold collisions and many-body physics in strongly-coupled system. In this paper, we will introduce our recent research on the scale invariant Fermi gases, such as the Efimovian expansion dynamics and the progress of many-body quantum heat engine.