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Pairing Fluctuations Approach to the BCS–BEC Crossover

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The BCS-BEC Crossover and the Unitary Fermi Gas

Part of the book series: Lecture Notes in Physics ((LNP,volume 836))

Abstract

This paper gives a survey of a diagrammatic approach for fermionic pairing fluctuations, which are relevant to the BCS–BEC crossover realized with ultracold Fermi gases. Emphasis will be given to the physical intuition about the relevant physical processes that can be associated with this approach. Specific results will be presented for thermodynamic and dynamical quantities, where a critical comparison with alternative diagrammatic approaches will also be attempted.

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Acknowledgments

The author is indebted to F. Palestini for a critical reading of the manuscript.

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Authors and Affiliations

  1. Dipartimento di Fisica, Università di Camerino, 62032, Camerino, Italy

    G. C. Strinati

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  1. G. C. Strinati
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  1. Fakultät für Physik, Physik-Department, Technische Universität München, James-Franck-Straße, Garching, 85747, Germany

    Wilhelm Zwerger

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Strinati, G.C. (2012). Pairing Fluctuations Approach to the BCS–BEC Crossover. In: Zwerger, W. (eds) The BCS-BEC Crossover and the Unitary Fermi Gas. Lecture Notes in Physics, vol 836. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21978-8_4

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  • DOI: https://doi.org/10.1007/978-3-642-21978-8_4

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