Probing the homogeneous spectral function of a strongly interacting superfluid atomic Fermi gas in a trap using phase separation and momentum-resolved radio-frequency spectroscopy
Probing the homogeneous spectral function of a strongly interacting superfluid atomic Fermi gas in a trap using phase separation and momentum-resolved radio-frequency spectroscopy
复制标题
使用相分离和动量分辨射频光谱探测陷阱中强相互作用超流体原子费米气体的均匀谱函数
DOI：
10.1103/physreva.84.013624
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发表时间：
2011-01
影响因子：
2.9
通讯作者：
Chen, Qijin
中科院分区：
文献类型：
--
作者：
Chen, Qijin
探测阱中强相互作用费米气体的局域谱函数A（\mathbf{k}，\ensuremath{\omega}）是一个重要的问题。动量分辨射频光谱已被证明能够探测陷阱平均$A（\mathbf{k}，\ensuremath{\omega}）$。然而，这种技术的实用性受到陷阱不均匀性的限制。独立于一个特定的理论，在这里，我们提出，通过研究在低温下相分离，人口不平衡的费米气体的少数费米子的动量分辨rf谱，可以有效地提取$A（\mathbf{k}，\ensuremath{\omega}）$的均匀超流费米气体（在陷阱中心）。在支持，我们提出了计算的光谱函数和光谱强度图的各种情况下，从BCS通过玻色-爱因斯坦凝聚制度，使用不同的理论。
It is of central importance to probe the local spectral function $A(\mathbf{k},\ensuremath{\omega})$ of a strongly interacting Fermi gas in a trap. Momentum-resolved rf spectroscopy has been demonstrated to be able to probe the trap-averaged $A(\mathbf{k},\ensuremath{\omega})$. However, the usefulness of this technique was limited by the trap inhomogeneity. Independent of a specific theory, here we propose that by studying the momentum-resolved rf spectra of the minority fermions of a phase-separated, population-imbalanced Fermi gas at low temperature, one can effectively extract $A(\mathbf{k},\ensuremath{\omega})$ of a homogeneous superfluid Fermi gas (at the trap center). In support, we present calculated spectral functions and spectral intensity maps for various cases from BCS through Bose-Einstein condensation regimes using different theories.
DOI：
10.1177/107621759902200304
发表时间：
1877-03
期刊：
The Dental Register
影响因子：
--
作者：
C. Edmonds;Ryan Givens;David Horne;C. Karnes;Brett Santhuff;Andrew Strobel;A. Torrez
通讯作者：
C. Edmonds;Ryan Givens;David Horne;C. Karnes;Brett Santhuff;Andrew Strobel;A. Torrez