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Bosonic binary mixtures with Josephson-type interactions

Author

Listed:
  • Souza, Valéria de C.
  • Arenas, Zochil González
  • Barci, Daniel G.
  • Linhares, Cesar A.

Abstract

Motivated by experiments in bosonic mixtures composed of a single element in two different hyperfine states, we study bosonic binary mixtures in the presence of Josephson interactions between species. We focus on a particular model with O(2) isospin symmetry, lifted by an imbalanced population parametrized by a Rabi frequency, ΩR, and a detuning, ν, which couples the phases of both species. We have studied the model at mean-field approximation plus Gaussian fluctuations. We have found that both species simultaneously condensate below a critical temperature Tc and the relative phases are locked by the applied laser phase, α. Moreover, the condensate fractions are strongly dependent on the ratio ΩR/∣ν∣ that is not affected by thermal fluctuations.

Suggested Citation

  • Souza, Valéria de C. & Arenas, Zochil González & Barci, Daniel G. & Linhares, Cesar A., 2016. "Bosonic binary mixtures with Josephson-type interactions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 450(C), pages 134-147.
    • Handle: RePEc:eee:phsmap:v:450:y:2016:i:c:p:134-147
    DOI: 10.1016/j.physa.2015.12.146
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