Energy spectrum and superfluidity breakdown of Bose–Einstein condensates in optical lattice under density-dependent artificial gauge field
Ming-Zhi Zhou,
Yun-E Ma,
Shi-Dong Xu
et al.
Abstract:The nonlinear feedback between the gauge field and the material field can yield novel quantum
phenomena. Here, the interplay of a density-dependent artificial gauge field and Bose-Einstein con densates (BECs) trapped in optical lattice are studied. The energy spectrum and superfluidity
represented by energetic and dynamical stabilities of the system are systematically discussed. The
density-dependent artificial gauge field with a back-action between the BECs dynamics and the
gau… Show more
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