| Effects of the Scattering Length on the Yrast Spectrum for a Two-Component Bose-Einstein Condensates |
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| 作者姓名： | 于洋 罗斌 刘琨 周小计 陈徐宗 |
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| 作者单位： | SchoolofElectronicEngineeringandComputerScience,PekingUniversity,Beijing100871／／KeyLaboratoryforQuantumInformationandMeasurementsofMinistryofEducation,PekingUniversity,Beijing100871 |
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| 摘 要： | 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.
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| 关 键 词： | 晕转态光谱 波色-爱因斯坦冷凝物 双成分原子 散射长度效应 |
Effects of the Scattering Length on the Yrast Spectrum for a Two-Component Bose--Einstein Condensates |
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| YU Yang,LUO Bin,LIU Kun,ZHOU Xiao-Ji,CHEN Xu-Zong.Effects of the Scattering Length on the Yrast Spectrum for a Two-Component Bose-Einstein Condensates[J].Chinese Physics Letters,2004,21(12):2351-2354. |
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| Authors: | YU Yang LUO Bin LIU Kun ZHOU Xiao-Ji CHEN Xu-Zong |
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| Institution: | 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 |
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| 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. |
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| Keywords: | 03 75 Fi 05 30 Jp 32 80 Pj |
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