Chien Chih-Chun, Chen Qijin, He Yan, Levin K
James Franck Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637, USA.
Phys Rev Lett. 2006 Sep 1;97(9):090402. doi: 10.1103/PhysRevLett.97.090402.
We derive the underlying finite temperature theory which describes Fermi gas superfluidity with population imbalance in a homogeneous system. We compute the pair formation temperature, superfluid transition temperature Tc, and superfluid density in a manner consistent with the standard ground state equations and, thereby, present a complete phase diagram. Finite temperature stabilizes superfluidity, as manifested by two solutions for Tc or by low T instabilities. At unitarity, the polarized state is an "intermediate-temperature superfluid."
我们推导了描述均匀系统中存在粒子数不平衡的费米气体超流性的基础有限温度理论。我们以与标准基态方程一致的方式计算配对形成温度、超流转变温度(Tc)和超流密度，从而给出一个完整的相图。有限温度使超流性稳定，这表现为(Tc)的两种解或低温不稳定性。在幺正极限下，极化态是一种“中温超流体”。
