摘要
研究了一维光晶格中费米气体从BCS区过渡到unitarity区研究相图及周期调制现象.通过调节散射长度与耠合系数对相图的影响,发现在unitarity区,从约瑟夫振荡到振荡自俘获及振荡自俘获到自俘获,存在耦合系数的临界值,同时得到了临界耦合系数与散射长度的关系.
The change of phase space and periodic modulation of Fermi gas from the BCS to unitarity is investigated in one-dimensional optical lattice. Through controlling the scattering length and coupling constant in unitarity, we find the critical values （from the Josephson oscillation to the oscillating-phase-type self-trapping and from the latter to the self-trapping）, at the same time, we also find the relationship between the critical coupling constants and the scattering length.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第13期100-104,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:11275156)资助的课题~~
关键词
费米气体
自俘获
周期调制
Fermi gases, self-trapping, periodic modulation
