物理学报2012，Vol.61Issue(1)：38-43,6.
超流Fermi气体在非简谐势阱中的集体激发
Collective excitations of superfluid Fermi gas in an anharmonic potential
摘要
Abstract
The collective excitations of a one-dimensional superfluid Fermi gas in an anharmonic trap are investigated.By using the variational approach,the frequency shifts about the dipole mode of the center-of-mass variations and the breathing mode of width variations are derived.It is found that the frequency shift in a unitary region is more significant.Under the excitations of different driving amplitudes, the two low-energy modes are coupled due to the contribution of the quartic item,and the quantum beating phenomenon comes into being.The frequency of beating increases with the driving amplitude.The dynamics of the width exhibits complex characteristics, especially,in the unitary region.关键词
超流Fermi气体/非谐振势/集体激发Key words
superfluid Fermi gas/anharmonic potential/collective excitations分类
数理科学引用本文复制引用
鱼自发,吴建鹏,王鹏程,张娇娇,唐荣安,薛具奎..超流Fermi气体在非简谐势阱中的集体激发[J].物理学报,2012,61(1):38-43,6.基金项目
国家自然科学基金（批准号：10774120 （）
10975114） （）
甘肃省自然科学基金 （）
西北师范大学科技创新工程基金（批准号：NWNU-KJCXGC-03-48）~~ （）
