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PreprintCC BY 4.0arXiv

Mixed bubbles in a binary mixture of spin-1 Bose-Einstein condensates

  • Uyen Ngoc Le
  • Ha Phuong Uyen Mai
  • Hieu Binh Le
  • Hiroki Saito
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Abstract

In mean-field theory, the ground state of a two-component Bose-Einstein condensate (BEC) in a uniform system is either uniformly mixed or totally separated. Beyond-mean-field effects introduce an additional phase, the mixed-bubble state, in which the two components remain mixed within one of the separated domains. Here we show that a mixed-bubble state can emerge in a binary mixture of spin-1 7Li and 23Na BECs even within the mean-field framework. We further demonstrate the existence of a metastable uniformly-mixed state, which undergoes a transition to the mixed-bubble state triggered by a local perturbation.

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Cite

BibTeXRIS
BibTeX
@misc{le2026mixed,
  title = {{Mixed bubbles in a binary mixture of spin-1 Bose-Einstein condensates}},
  author = {Uyen Ngoc Le and Ha Phuong Uyen Mai and Hieu Binh Le and Hiroki Saito},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.39231},
  eprint = {2609.39231},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.39231},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Mixed bubbles in a binary mixture of spin-1 Bose-Einstein condensates
AU  - Uyen Ngoc Le
AU  - Ha Phuong Uyen Mai
AU  - Hieu Binh Le
AU  - Hiroki Saito
PY  - 2026
DA  - 2026/09/30
PB  - arXiv
DO  - 10.48550/arxiv.2609.39231
UR  - https://arxiv.org/abs/2609.39231
AB  - In mean-field theory, the ground state of a two-component Bose-Einstein condensate (BEC) in a uniform system is either uniformly mixed or totally separated. Beyond-mean-field effects introduce an additional phase, the mixed-bubble state, in which the two components remain mixed within one of the separated domains. Here we show that a mixed-bubble state can emerge in a binary mixture of spin-1 ^7Li and ^23Na BECs even within the mean-field framework. We further demonstrate the existence of a metastable uniformly-mixed state, which undergoes a transition to the mixed-bubble state triggered by a local perturbation.
ER  -