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

Pramana

Yong-Qing Liu1¹ 

[1] Department of Physics and Electronics, XinZhou Teachers University, XinZhou, 034000, China$$

关键词: Magnons;    spin wave;    dipolar spinor Bose–Einstein condensates.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown