幺正极限附近的光谱Bogoliubov特征
Spectroscopic Bogoliubov features near the unitary limit
摘要：
我们分析了单粒子激发光谱的超冷费米子原子系统接近酉极限，已经发现的实验证据Bogoliubov准粒子低于以及高于转变温度Tc。我们认为，从预制对的短程相关性，并试图重现实验数据适应现象学的自能先前用于描述的负掺杂铜酸盐超导体的反节谱。结果表明，它与由动量分辨RF谱得到的{40}^K原子的线形相当吻合。
英文摘要：
We analyze the single particle excitation spectrum of the ultracold fermion atom system close to the unitary limit where there has been found experimental evidence for the Bogoliubov quasiparticles below as well as above the transition temperature Tc. We consider the short-range correlations originating from the preformed pairs and try to reproduce the experimental data adapting phenomenological selfenergy previously used for description of the anti-nodal spectra of the underdoped cuprate superconductors. We show that it fairly fits the lineshapes obtained by the momentum resolved RF spectroscopy for {40}^K atoms.
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