期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 69, 期 12, 页码 3864-3869出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.69.3864
关键词
Bose-Einstein condensation; non-condensate; Gross-Pitaevskii equation; Bogoliubov equation; critical temperature
It is investigated theoretically that magnetized Bose-Einstein condensation (BEC) with; the internal (spin) degrees of freedom exhibits a rich variety of phase transitions, depending on the sign of the interaction in the spin channel. In the antiferromagnetic interaction case there exist always double BEC transitions from single component BEC to multiple component BEG. In the ferromagnetic case BEC becomes always unstable at a lower temperature, leading to a phase separation. The detailed phase dia,sram for the temperature vs the polarization, the spatial spin structure, the distribution of non-condensates and the excitation spectrum are examined for the harmonically trapped systems.
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