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Multichannel nature of Efimov physics with ultracold 7Li atoms

POSTER

Abstract

We present our current understanding of various aspects of Efimov physics originating from the complex multichannel hyperfine structure and overlap of Feshbach resonances for 7Li atoms. This further help us to explain puzzling experimental observations with ultracold gases. We have characterized the energies of Efimov states and corresponding interference and resonance scattering phenomena associated to them as a function of an external magnetic field. Our results also indicate that Efimov states in the 7Li system can have a unique mixed hyperfine character which strongly affect their near-threshold behavior for repulsive interatomic interactions. [1] Y. Yudkin, R. Elbaz, L. Khaykovich, arXiv:2004.02723.

Presenters

  • Jose P D'Incao

    JILA, JILA/ University of Colorado, Boulder, Colorado, JILA, NIST and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA, NIST, and Dept of Physics, Univ. of Colorado Boulder

Authors

  • Jose P D'Incao

    JILA, JILA/ University of Colorado, Boulder, Colorado, JILA, NIST and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA, NIST, and Dept of Physics, Univ. of Colorado Boulder

  • Yaakov Yudkin

    Department of Physics, QUEST Center and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel

  • Paul S Julienne

    Joint Quantum Institute, University of Maryland and NIST, College Park, MD 20742, USA, NIST/JQI

  • Lev Khaykovich

    Department of Physics, QUEST Center and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel