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Solitons in a Spin-Orbit-Coupled Spin-1 Bose-Einstein Condensate

Abstract

After the pioneering studies on spinor Bose-Einstein condensate (BEC) and after the realization of spin-orbit (SO) coupling in a spinor BEC of 87Rb and 23Na atoms, it is now realized that an SO-coupled BEC may reveal new physical phenomena not possible in a scalar BEC. For example, a new class of two- or three-dimensional vector soliton can be stabilized and observed in an SO-coupled BEC, whereas such a soliton is unstable in a scalar BEC. In this paper, we present a review on solitons in an SO-coupled spin-1 spinor BEC in one, two, and three space dimensions. In addition to the static properties of these solitons, we also consider their dynamics of motion with a constant velocity and collision between two solitons.

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Funding

SG thanks the Science & Engineering Research Board, Department of Science and Technology, Government of India (Project: ECR/2017/001436) and Indian Institute of Technology, Ropar (ISIRD Project: 9-256/2016/IITRPR/823) for support. S.K.A. acknowledges support by the CNPq (Brazil) grant 301324/2019-0, and by the ICTP-SAIFR FAPESP (Brazil) grant 2016/01343-7.

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Gautam, S., Adhikari, S.K. Solitons in a Spin-Orbit-Coupled Spin-1 Bose-Einstein Condensate. Braz J Phys 51, 298–307 (2021). https://doi.org/10.1007/s13538-020-00796-1

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  • DOI: https://doi.org/10.1007/s13538-020-00796-1

Keywords

  • Spinor Bose-Einstein condensate
  • Spin-orbit coupling
  • Soliton