Superfluid transition of a strongly ferromagnetic Bose gas

ORAL

Abstract

The recently-realized 7Li condensate [1] is the first strongly ferromagnetic BEC available in a laboratory. Contrary to the both mean-field picture and an earlier claim of split transitions [2], we theoretically show that, in three spatial dimensions, such a strongly ferromagnetic gas must undergo a first order transition from the normal phase directly into a state with finite condensate density and magnetization. We will discuss the experimental signatures for the first order transition in a trapped gas, and the role of magnetic field and spin imbalance [3]. We will also report on the magnetism of the strongly ferromagnetic Bose gas in quasi-2D confinement.

[1] Huh, Kim, Kwon, Choi, Physical Review Research 2, 033471 (2020)

[2] Natu, Mueller, Physical Review A 84, 053625 (2011)

[3] How, Yip, arxiv:2401.12541

*This work is supported by the National Science and Technology Council of Taiwan under grant number MOST 110-2112-M-001-051-MY3. PTH is additionally supported under NSTC 112-2811-M-001-051.

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Publication: How, Yip, arxiv:2401.12541
How, Yip, planned paper on quasi-2D ferromagnetic Bose gas

Presenters

  • Pye Ton How

    • Academia Sinica

Authors

  • Pye Ton How

    • Academia Sinica

  • Sungkit Yip

    • Institute of Physics, Academia Sinica and Institute of Atomic and Molecular Scineces, Academia Sinica
    • Inst of Physics Academia Sinica