Sinha S, Shlyapnikov G V
Max-Planck-Institut für Physik Komplexer Systeme, 38 Nöthnitzer Strasse, 01187 Dresden, Germany.
Phys Rev Lett. 2005 Apr 22;94(15):150401. doi: 10.1103/PhysRevLett.94.150401.
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.
我们表明，在二维各向异性陷阱中的极端旋转下，玻色凝聚气体形成了一种具有旋子 - 声子激发谱的新型细长量子流体。对于足够大的相互作用强度，旋子能量达到零，系统经历二级量子跃迁到具有周期性结构——涡旋行的状态。行数随相互作用增加，并且涡旋最终形成三角形阿布里科索夫晶格。
