Suppression of Unitary Three-body Loss in a Degenerate Bose-Fermi Mixture

ORAL

Abstract

We study three-body loss in a mixture of 23Na and 40K, where the potassium atoms are Fermi degenerate. We find that at unitarity, where the interspecies scattering length diverges, the usual inverse-squared temperature scaling of the three-body loss found in nondegenerate systems is strongly modified, specifically, the loss is suppressed with the increasing degeneracy of the Fermi gas. The observed suppression is stronger than the prediction from the zero-range theory, suggesting the presence of many-body effects.

*We acknowledge support from the Max Planck Society, the European Union (PASQuanS Grant No. 817482) and the Deutsche Forschungsgemeinschaft under Germany's Excellence Strategy – EXC-2111 – 390814868 and under Grant No. FOR 2247.

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Presenters

  • Xingyan Chen

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics

Authors

  • Xingyan Chen

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics

  • Marcel Duda

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics

  • Andreas Schindewolf

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics

  • Roman Bause

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics

  • Immanuel F Bloch

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics
    • Max-Planck Institute for Quantum Optics (MPQ)
    • Ludwig-Maximilians-University Munich
    • Max Planck Institute for Plasma Physics
    • Ludwig-Maximilians-Universitaet (LMU-Munich), Max-Planck Institut für Quantenoptik, Munich Center for Quantum Science and Technology (MCQST)

  • Xinyu Luo

    • Max Planck Institute for Quantum Optics
    • Max Planck Institute of Quantum Optics