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Phase separation of ferromagnetic spin-1 Bose gases in non-zero magnetic field

  • Laser Cooling and Quantum Gas
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Abstract.

Properties of ferromagnetic spin-1 Bose gases above and at the temperature of Bose-Einstein condensation are studied in the presence of a magnetic field. The equation of state is given in a mean-field approximation. It is found that there exists a critical magnetic field and below that two phases coexist with different particle densities. The stability of the system is also investigated with the help of the susceptibility matrix. The dynamics of the system is worked out in the Random Phase Approximation and the soft mode corresponding to the critical point is given.

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Authors and Affiliations

  1. Research Group for Statistical Physics of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/A, 1117, Budapest, Hungary

    G. Szirmai

  2. Department of Physics of Complex Systems, Roland Eötvös University, Pázmány Péter sétány 1/A, 1117, Budapest, Hungary

    K. Kis-Szabó & P. Szépfalusy

  3. Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O. Box 49, 1525, Budapest, Hungary

    P. Szépfalusy

Authors
  1. G. Szirmai
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  2. K. Kis-Szabó
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  3. P. Szépfalusy
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Correspondence to G. Szirmai.

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Szirmai, G., Kis-Szabó, K. & Szépfalusy, P. Phase separation of ferromagnetic spin-1 Bose gases in non-zero magnetic field. Eur. Phys. J. D 36, 281–287 (2005). https://doi.org/10.1140/epjd/e2005-00221-7

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  • DOI: https://doi.org/10.1140/epjd/e2005-00221-7

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