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arXiv · 0706.3361

Polarized States and Domain Walls in Spinor Bose-Einstein Condensates

H. E. Nistazakis·D. J. Frantzeskakis·P. G. Kevrekidis·B. A. Malomed·R. Carretero-Gonzalez·A. R. Bishop
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Abstract

We study spin-polarized states and their stability in anti-ferromagnetic states of spinor (F=1) quasi-one-dimensional Bose-Einstein condensates. Using analytical approximations and numerical methods, we find various types of polarized states, including: patterns of the Thomas-Fermi type; structures with a pulse-shape in one component inducing a hole in the other components; states with holes in all three components; and domain walls. A Bogoliubov-de Gennes analysis reveals that families of these states contain intervals of a weak oscillatory instability, except for the domain walls, which are always stable. The development of the instabilities is examined by means of direct numerical simulations.

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H. E. Nistazakis, D. J. Frantzeskakis, P. G. Kevrekidis, B. A. Malomed, R. Carretero-Gonzalez, A. R. Bishop. 2007-06-22. Polarized States and Domain Walls in Spinor Bose-Einstein Condensates. https://doi.org/10.1103/physreva.76.063603

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