AI 中文总结
本研究探究自旋不平衡幺正费米气体流体动力学区域的自旋输运，通过淬灭周期光势观测多体系统弛豫，确定自旋相关系数，为微观理论提供基准并建立超冷原子研究平台。
AI 中文摘要
流体动力学支配着自然界中从夸克-胶子等离子体膨胀到量子材料中粘性电子流动等多种集体现象。在强相互作用的流体中，自旋输运的机制仍知之甚少。本研究对束缚在均匀光箱中的自旋不平衡幺正费米气体的流体动力学区域内的自旋输运展开探究。通过淬灭可同时调制密度与自旋极化的空间周期光势，观测到多体系统的弛豫过程，该过程可确定均匀量子气体中的自旋扩散系数及自旋塞贝克/珀尔帖系数。研究所得测量结果为微观理论提供了无参数基准，并建立了用于研究强关联物质中自旋热电子学的超冷原子平台。
英文摘要
Hydrodynamics governs diverse collective phenomena in nature, from the expansion of a quarkgluon plasma to viscous electron flow in quantum materials. In strongly interacting hydrodynamic fluids, the transport of spin remains poorly understood. Here, we investigate spin transport in the hydrodynamic regime of a spin-imbalanced unitary Fermi gas confined in a uniform optical box. By quenching a spatially periodic optical potential that modulates both the density and spin polarization, we observe the relaxation of the many-body system, which determines both the spin diffusivity and the spin Seebeck/Peltier coefficients in a homogeneous quantum gas. Our measurements provide parameter-free benchmarks for microscopic theories and establish an ultracold atom platform for studying spin caloritronics in strongly correlated matter.
Comments23 pages, 8 figures
