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Spinor dipolar Bose-Einstein condensates; Classical spin approach

273   0   0.0 ( 0 )
 نشر من قبل Masahiro Takahashi
 تاريخ النشر 2007
  مجال البحث فيزياء
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Magnetic dipole-dipole interaction dominated Bose-Einstein condensates are discussed under spinful situations. We treat the spin degrees of freedom as a classical spin vector, approaching from large spin limit to obtain an effective minimal Hamiltonian; a version extended from a non-linear sigma model. By solving the Gross-Pitaevskii equation we find several novel spin textures where the mass density and spin density are strongly coupled, depending upon trap geometries due to the long-range and anisotropic natures of the dipole-dipole interaction.

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