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Fermions in two dimensions

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The two-dimensional Fermi gas with short-range interactions provides a basic model for understanding pairing and superconductivity in quasi-2D materials. The successful realisation of such a model system in cold-atom experiments could yield further insight into unexplained phenomena such as the pseudogap regime. I will discuss recent progress towards understanding the finite-temperature behaviour of the 2D Fermi gas and our interpretation of current quasi-2D experiments on the BCS -BEC crossover [1-3].

[1] V. Ngampruetikorn, J. Levinsen & M. M. Parish, Phys. Rev. Lett. 111, 265301 (2013) [2] M. Bauer, M. M. Parish & T. Enss, Phys. Rev. Lett. 112, 135302 (2014) [3] A. M. Fischer & M. M. Parish, Phys. Rev. A 88 , 023612 (2013)

This talk is part of the Theory of Condensed Matter series.

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