Chinese Physics B

Energy band structure of spin-1 condensates in optical lattices

Zhi Li, Ai‐Xia Zhang, Juan Ma, Xue Ju-Kui

Published Oct 1, 2010• 0 citations

Abstract

The energy band structure of spin-1 condensates with repulsive spin-independent and either ferromagnetic or antiferromagnetic spin-dependent interactions in one-dimensional (1D) periodic optical lattices is discussed. Within the two-mode approximation, Bloch bands of spin-1 condensates are presented. The results show that the Bloch bands exhibit a complex structure as the atom density of mF = 0 hyperfine state increases: bands splitting, reversion, intersection and loop structure are excited subsequently. The complex band structure should be related to the tunneling and spin-mixing dynamics.

DOI: 10.1088/1674-1056/19/10/100306

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