Morphological Superfluid in a Nonmagnetic Spin-2 Bose-Einstein Condensate

Emi Yukawa and Masahito Ueda
Phys. Rev. Lett. 124, 105301 – Published 9 March 2020
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Abstract

The two known mechanisms for superflow are the gradient of the U(1) phase and the spin-orbit-gauge symmetry. We find the third mechanism, namely a spatial variation of the order-parameter morphology protected by a hidden su(2) symmetry in a nonmagnetic spin-2 Bose-Einstein condensate. Possible experimental situations are also discussed.

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  • Received 17 May 2019
  • Accepted 4 February 2020

DOI:https://doi.org/10.1103/PhysRevLett.124.105301

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Emi Yukawa1,* and Masahito Ueda2,3,1

  • 1RIKEN Center for Emergent Matter Science, 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan
  • 2Department of Physics, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
  • 3Institute for Physics of Intelligence, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan

  • *emi.yukawa@riken.jp

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Issue

Vol. 124, Iss. 10 — 13 March 2020

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