Ground states, solitons and spin textures in spin-1 Bose-Einstein condensates

Shu Wei Song, Lin Wen, Chao Fei Liu, S. C. Gou, Wu Ming Liu

Research output: Contribution to journalReview article

9 Citations (Scopus)

Abstract

We present an overview of our recent theoretical studies on the quantum phenomena of the spin-1 Bose-Einstein condensates, including the phase diagram, soliton solutions and the formation of the topological spin textures. A brief exploration of the effects of spin-orbit coupling on the ground-state properties is given. We put forward proposals by using the transmission spectra of an optical cavity to probe the quantum ground states: the ferromagnetic and polar phases. Quasi-one-dimension solitons and ring dark solitons are studied. It is predicted that characteristics of the magnetic solitons in optical lattice can be tuned by controlling the long-range light-induced and static magnetic dipoledipole interactions; solutions of single-component magnetic and single-, two-, three-components polar solitons are found; ring dark solitons in spin-1 condensates are predicted to live longer lifetimes than that in their scalar counterparts. In the formation of spin textures, we have considered the theoretical model of a rapidly quenched and fast rotating trapped spin-1 Bose-Einstein condensate, whose dynamics can be studied by solving the stochastic projected Gross-Pitaevskii equations. Spontaneous generation of nontrivial topological defects, such as the hexagonal lattice skyrmions and square lattice of half-quantized vortices was predicted. In particular, crystallization of merons (half skyrmions) can be generated in the presence of spin-orbit coupling.

Original languageEnglish
Pages (from-to)302-318
Number of pages17
JournalFrontiers of Physics
Volume8
Issue number3
DOIs
Publication statusPublished - 2013 Jun 1

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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