Superfluid Fermi Gases in a Rotating Anharmonic Trap
Superfluid Fermi Gases in a Rotating Anharmonic Trap作者机构:College of Physics and Electronics Engineering Northwest Normal University Lanzhou 730070 China
出 版 物:《Communications in Theoretical Physics》 (理论物理通讯(英文版))
年 卷 期:2011年第55卷第3期
页 面:434-440页
核心收录:
学科分类:0809[工学-电子科学与技术(可授工学、理学学位)] 08[工学] 0825[工学-航空宇航科学与技术]
主 题:superfluid Fermi gases anisotropic anharmonic trap vortex
摘 要:The quadrupole mode frequency, the monopole mode frequency, and the critical rotational frequency for stirring a single vortex nucleation along the BEC-BCS crossover are obtained. The results show that, in a rotating anisotropic anharmonic trap, the quadrupole mode frequency and the critical rotational frequency for stirring a single vortex nucleation are modified significantly when the system crosses from the BEC side to the BCS side: the anisotropy of the trap induces a downshiff of the quadrupole mode frequency and the critical rotational frequency and helps the vortex formation in the system, while an anharmonic trap induces an upshift of the quadrupole mode frequency and the critical rotational frequency and suppresses the vortex formation in the system.