| Landau damping and frequency-shift of a quadrupole mode in a disc-shaped rubidium Bose–Einstein condensate |
| |
| 引用本文： | 阿孜古丽·热合木提,彭胜强,马晓栋.Landau damping and frequency-shift of a quadrupole mode in a disc-shaped rubidium Bose–Einstein condensate[J].中国物理 B,2014(9):118-124. |
| |
| 作者姓名： | 阿孜古丽·热合木提 彭胜强 马晓栋 |
| |
| 作者单位： | College of Physics and Electronic Engineering,Xinjiang Normal University |
| |
| 基金项目： | supported by the National Natural Science Foundation of China(Grant No.11264039);the Key Discipline of Theoretical Physics of Xinjiang,China(Grant Nos.LLWLY201202 and LLWLY201203);the Postgraduate Scientific and Theoretical Innovation Project of Xinjiang Normal University,China(Grant No.20131234) |
| |
| 摘 要： | The damping and frequency-shift in Landau mechanism of a quadrupole mode in a disc-shaped rubidium Bose–Einstein condensate are investigated by using the Hartree–Fock–Bogoliubov approximation. The practical relaxations of the elementary excitations and the orthometric relation among them are taken into account to obtain advisable calculation formula for damping as well as frequency-shift. The first approximation of Gaussian distribution function is employed for the ground-state wavefunction to suitably eliminate the divergence of the analytic three-mode coupling matrix elements.According to these methods, both Landau damping rate and frequency-shift of the quadrupole mode are analytically calculated. In addition, all the theoretical results agree with the experimental ones.
|
| 关 键 词： | Bose–Einstein condensate Landau damping and frequency-shift Hartree–Fock–Bogoliubov approximation Thomas–Fermi approximation |
Landau damping and frequency-shift of a quadrupole mode in a disc-shaped rubidium Bose-Einstein condensate |
| |
| Rahmut Arzigul,Peng Sheng-Qiang,Ma Xiao-Dong.Landau damping and frequency-shift of a quadrupole mode in a disc-shaped rubidium Bose-Einstein condensate[J].Chinese Physics B,2014(9):118-124. |
| |
| Authors: | Rahmut Arzigul Peng Sheng-Qiang Ma Xiao-Dong |
| |
| Abstract: | Bose-Einstein condensate, Landau damping and frequency-shift, Hartree-Fock-Bogoliubov approximation, Thomas-Fermi approximation |
| |
| Keywords: | Bose-Einstein condensate Landau damping and frequency-shift Hartree-Fock-Bogoliubov approximation Thomas-Fermi approximation |
| 本文献已被 CNKI 维普 等数据库收录！ |
