• Magnons interaction of spinor Bose–Einstein condensates in an optical lattice

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      https://www.ias.ac.in/article/fulltext/pram/073/06/1105-1110

    • Keywords

       

      Magnons; spin wave; dipolar spinor Bose–Einstein condensates.

    • Abstract

       

      We study the interaction of magnons in dipolar spinor Bose–Einstein condensates in an optical lattice. By means of Holstein–Primakoff and Fourier transformations the energy spectra of the ground and the excited states is obtained analytically. Our results show that the collision of magnons is elastic which is expressed by the conservation of wave numbers in the process of collision. At last, we found that the interaction of magnons is attractive which tends to self-localization to form spin waves, i.e., a cluster of a macroscopic number of coherent magnons. Because of the attraction, the instability of spin wave brings about the existence of solitary wave.

    • Author Affiliations

       

      Yong-Qing Liu1

      1. Department of Physics and Electronics, XinZhou Teachers University, XinZhou, 034000, China
    • Dates

       
  • Pramana – Journal of Physics | News

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