Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-07-25
J. Phys. Soc. Jpn. 75, 074605 (2006)
Physics
Condensed Matter
Other Condensed Matter
6 pages, 5 figures. Published in J. Phys. Soc. Jpn
Scientific paper
10.1143/JPSJ.75.074605
The spinor Bose-Einstein condensate of atomic gases has been experimentally realized by a number of groups. Further, theoretical proposals of the possible vortex states have been sugessted. This paper studies the effects of the quadratic Zeeman energy on the vortex states. This energy was ignored in previous theoretical studies, although it exists in experimental systems. We present phase diagrams of various vortex states taking into account the quadratic Zeeman energy. The vortex states are calculated by the Gross-Pitaevskii equations. Several new kinds of vortex states are found. It is also found that the quadratic Zeeman energy affects the direction of total magnetization and causes a significant change in the phase diagrams.
Isoshima Tomoya
Yip Sungkit
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