Two-dimensional Bose-Einstein condensate under extreme rotation.
Two-dimensional Bose-Einstein condensate under extreme rotation.
复制标题
极端旋转下的二维玻色-爱因斯坦凝聚态。
DOI：
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发表时间：
2004
影响因子：
8.6
通讯作者：
G. Shlyapnikov
中科院分区：
文献类型：
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作者：
S. Sinha;G. Shlyapnikov;G. Shlyapnikov
我们证明了玻色凝聚气体在二维各向异性势阱中的极端旋转作用下，形成了一种具有旋转极大激发谱的新型细长量子流体。当相互作用强度足够大时，旋子能量为零，系统发生二阶量子跃迁，跃迁到具有周期性结构的涡旋态。随着相互作用的增加，涡旋的行数增加，最终形成三角形的Abrikosov晶格。
We show that a Bose-condensed gas, under extreme rotation in a 2D anisotropic trap, forms a novel elongated quantum fluid which has a roton-maxon excitation spectrum. For a sufficiently large interaction strength, the roton energy reaches zero and the system undergoes a second order quantum transition to the state with a periodic structure-rows of vortices. The number of rows increases with the interaction, and the vortices eventually form a triangular Abrikosov lattice.