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arXiv · 1304.4674

Spin-glass-like behavior in the spin turbulence of spinor Bose-Einstein condensates

Makoto Tsubota·Yusuke Aoki·Kazuya Fujimoto
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Abstract

We study numerically the spin turbulence in spin-1 ferromagnetic spinor Bose-Einstein condensates (BECs). Spin turbulence (ST) is characterized by a -7/3 power law in the spectrum of the spin-dependent interaction energy. The direction of the spin density vector is spatially disordered but temporally frozen in ST, showing some analogy with the spin glass state. Thus, we introduce the order parameter of spin glass into ST in spinor BECs. When ST develops through some instability, the order parameter grows with a -7/3 power law, thus succeeding in describing ST well.

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Makoto Tsubota, Yusuke Aoki, Kazuya Fujimoto. 2013-04-17. Spin-glass-like behavior in the spin turbulence of spinor Bose-Einstein condensates. https://doi.org/10.1103/physreva.88.061601

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