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arXiv · 2404.14791

Phase separation and metastability in a mixture of spin-1 and spin-2 Bose-Einstein condensates

Uyen Ngoc Le·Hieu Binh Le·Hiroki Saito
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Abstract

We investigate the ground state and dynamics of a mixture of spin-1 and spin-2 Bose-Einstein condensates of ${}^{87}{\rm{Rb}}$ atoms. For the experimentally measured interaction coefficients, the ground state exhibits phase separation between the spin-1 ferromagnetic state and the spin-2 nematic state. At the interface between them, a partially polarized spin state emerges. The uniformly mixed state of the spin-1 polar state and spin-2 biaxial nematic state is metastable, and the phase separation via nucleation can be triggered by a local perturbation.

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Uyen Ngoc Le, Hieu Binh Le, Hiroki Saito. 2024-04-23. Phase separation and metastability in a mixture of spin-1 and spin-2 Bose-Einstein condensates. https://doi.org/10.1103/physreva.110.033328

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