Anomalous spin segregation in a weakly interacting two-component Fermi gas
Anomalous spin segregation in a weakly interacting two-component Fermi gas
复制标题
弱相互作用双组分费米气体中的反常自旋偏析
DOI：
10.1103/physreva.79.051601
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发表时间：
2009
影响因子：
2.9
通讯作者：
E. Mueller
中科院分区：
文献类型：
--
作者：
Stefan S. Natu;E. Mueller
我们解释了在杜克的{sup 6}Li [X]的双组分气体中看到的自旋偏析。杜湖，澳-地Luo，B.克兰西和J. E。托马斯，物理学评论快报。101，150401（2008）]作为可经由无碰撞玻尔兹曼方程描述的平均场效应。正如在实验中看到的，我们发现，在两个自旋态的捕获势的微小差异驱动小的自旋电流。Hartree-Fock型相互作用将这些电流转换为能量空间中的种群重新分布，从而形成长寿命的自旋织构。我们探讨了这些动力学的相互作用强度的依赖，发现非平凡的依赖系统参数和密切的协议与实验。
We explain the spin segregation seen at Duke in a two-component gas of {sup 6}Li [X. Du, L. Luo, B. Clancy, and J. E. Thomas, Phys. Rev. Lett. 101, 150401 (2008)] as a mean-field effect describable via a collisionless Boltzmann equation. As seen in experiments, we find that slight differences in the trapping potentials in the two spin states drive small spin currents. The Hartree-Fock-type interactions convert these currents into a redistribution of populations in energy space, and consequently a long-lived spin texture develops. We explore the interaction strength dependence of these dynamics, finding nontrivial dependence on system parameters and close agreement with experiment.