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Fermions in two dimensions

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In this talk, I will consider fermionic atoms confined to a quasi-two-dimensional geometry. First, I will expose the behaviour of the pair correlations at high temperature by determining the spectral function and contact within the virial expansion. The calculated spectra are in qualitative agreement with recent photoemission measurements, thus suggesting that the observed pairing gap is a feature of the high-temperature gas rather than being evidence of a pseudogap regime just above the superfluid transition temperature. I will further investigate the effect of the quasi-two-dimensional confinement and show that the higher confinement levels can substantially modify fermion pairing.

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