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Second sound and the superfluid fraction in a Fermi gas with resonant interactions

Author

Listed:
  • Leonid A. Sidorenkov

    (Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria
    Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria)

  • Meng Khoon Tey

    (Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria
    Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria)

  • Rudolf Grimm

    (Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria
    Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria)

  • Yan-Hua Hou

    (Universitá di Trento and INO-CNR BEC Center, I-38123 Povo, Italy)

  • Lev Pitaevskii

    (Universitá di Trento and INO-CNR BEC Center, I-38123 Povo, Italy
    Kapitza Institute for Physical Problems, Russian Academy of Sciences, 119334 Moscow, Russia)

  • Sandro Stringari

    (Universitá di Trento and INO-CNR BEC Center, I-38123 Povo, Italy)

Abstract

In an ultracold, superfluid Fermi gas, measurements of second sound — a wave in which the superfluid and normal components of the gas oscillate in antiphase — make it possible to determine the temperature dependence of the superfluid fraction.

Suggested Citation

  • Leonid A. Sidorenkov & Meng Khoon Tey & Rudolf Grimm & Yan-Hua Hou & Lev Pitaevskii & Sandro Stringari, 2013. "Second sound and the superfluid fraction in a Fermi gas with resonant interactions," Nature, Nature, vol. 498(7452), pages 78-81, June.
    • Handle: RePEc:nat:nature:v:498:y:2013:i:7452:d:10.1038_nature12136
    DOI: 10.1038/nature12136
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