Theoretical Approach to the Gauge Invariant Linear Response Theories for Ultracold Fermi Gases with Pseudogap

<div>The left one is the AL<sub>1</sub> diagram, and the right one is the AL<sub>2</sub> diagram. The thin and thick lines denote the bare and full Green’s functions, respectively.</div>

Advances in Condensed Matter Physics

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Figure 4

Figure 4: Theoretical Approach to the Gauge Invariant Linear Response Theories for Ultracold Fermi Gases with Pseudogap 