中国物理B ›› 2014, Vol. 23 ›› Issue (3): 30311-030311.doi: 10.1088/1674-1056/23/3/030311

• GENERAL • 上一篇    下一篇

Soliton breathers in spin-1 Bose–Einstein condensates

冀慎统, 颜培根, 刘学深   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2013-09-27 修回日期:2013-11-07 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11271158 and 11174108).

Soliton breathers in spin-1 Bose–Einstein condensates

Ji Shen-Tong (冀慎统), Yan Pei-Gen (颜培根), Liu Xue-Shen (刘学深)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2013-09-27 Revised:2013-11-07 Online:2014-03-15 Published:2014-03-15
  • Contact: Liu Xue-Shen E-mail:liuxs@jlu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11271158 and 11174108).

摘要: We consider a spin-1 Bose–Einstein condensate trapped in a harmonic potential with different nonlinearity coefficients. We illustrate the dynamics of soliton breathers in two-component and three-component states by numerically solving the one-dimensional time-dependent coupled Gross–Pitaecskii equations (GPEs). We present that two condensates with repulsive interspecies interactions make elastic collision and novel soliton breathers are created in two-component state. We also demonstrate novel soliton breathers in three-component state with attractive coupling constants. Furthermore, possible reasons for creating soliton breathers are discussed.

关键词: spin-1 Bose–, Einstein condensate, soliton breathers, Gross–, Pitaecskii equations (GPEs)

Abstract: We consider a spin-1 Bose–Einstein condensate trapped in a harmonic potential with different nonlinearity coefficients. We illustrate the dynamics of soliton breathers in two-component and three-component states by numerically solving the one-dimensional time-dependent coupled Gross–Pitaecskii equations (GPEs). We present that two condensates with repulsive interspecies interactions make elastic collision and novel soliton breathers are created in two-component state. We also demonstrate novel soliton breathers in three-component state with attractive coupling constants. Furthermore, possible reasons for creating soliton breathers are discussed.

Key words: spin-1 Bose–Einstein condensate, soliton breathers, Gross–Pitaecskii equations (GPEs)

中图分类号:  (Multicomponent condensates; spinor condensates)

  • 03.75.Mn
03.75.Lm (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations) 03.75.Kk (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)