| Original Articles |
|
|
|
|
Effects of the Scattering Length on the Yrast Spectrum for a Two-Component Bose--Einstein Condensates |
| YU Yang;LUO Bin;LIU Kun;ZHOU Xiao-Ji;CHEN Xu-Zong |
| School of Electronic Engineering and Computer Science, Peking University, Beijing 100871
Key Laboratory for Quantum Information and Measurements of Ministry of Education, Peking University, Beijing 100871 |
|
| Cite this article: |
|
YU Yang, LUO Bin, LIU Kun et al 2004 Chin. Phys. Lett. 21 2351-2354 |
|
|
|
Abstract We study the energy eigenvalue and the yrast states for a harmonically two-component weak-interacting Bose--Einstein condensate (BEC) when the intra-species and interspecies scattering length are different. The energy shift for different energy eigenvalues related to intra- and interspecies scattering lengths is calculated with the perturbation method. The actual yrast spectrum is more complicated than that when intra-species and interspecies scattering length are equal. The degenerated features disappear and so do the perfect symmetric features.
|
| Keywords:
03.75.Fi
05.30.Jp
32.80.Pj
|
|
|
Published: 01 December 2004
|
|
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
