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Efimov-driven phase transitions of the unitary Bose gas

Author

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  • Swann Piatecki

    (Laboratoire de Physique Statistique, École Normale Supérieure, UPMC, Université Paris Diderot, CNRS)

  • Werner Krauth

    (Laboratoire de Physique Statistique, École Normale Supérieure, UPMC, Université Paris Diderot, CNRS)

Abstract

Initially predicted in nuclear physics, Efimov trimers are bound configurations of three quantum particles that fall apart when any one of them is removed. They open a window into a rich quantum world that has become the focus of intense experimental and theoretical research, as the region of ‘unitary’ interactions, where Efimov trimers form, is now accessible in cold-atom experiments. Here we use a path-integral Monte Carlo algorithm backed up by theoretical arguments to show that unitary bosons undergo a first-order phase transition from a normal gas to a superfluid Efimov liquid, bound by the same effects as Efimov trimers. A triple point separates these two phases and another superfluid phase, the conventional Bose–Einstein condensate, whose coexistence line with the Efimov liquid ends in a critical point. We discuss the prospects of observing the proposed phase transitions in cold-atom systems.

Suggested Citation

  • Swann Piatecki & Werner Krauth, 2014. "Efimov-driven phase transitions of the unitary Bose gas," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4503
    DOI: 10.1038/ncomms4503
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