期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
卷 17, 期 14, 页码 2643-2698出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979203018399
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We review some recent results on discrete symmetries and topological order in spinor Bose-Einstein condensates (BECs) of Na-23. For spin one bosons with two-body scatterings dominated by a total spin equal to two channel, the BECs are in quantum spin nematic states at a low density limit. We study spin correlations in condensates at different limits and analyze hidden symmetries using a non-perturbative approach developed recently. Furthermore we investigate the influence of hidden Z(2) symmetries and U(1) quantum orders in symmetry partially restored states, particularly the effects on topological excitations.
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