School of Electronic Engineering and Computer Science, Peking University, Beijing 100871Key Laboratory for Quantum Information and Measurements of Ministry of Education, Peking University, Beijing 100871
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.
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]. Chin. Phys. Lett., 2004, 21(12): 2351-2354.
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]. Chin. Phys. Lett., 2004, 21(12): 2351-2354.
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]. Chin. Phys. Lett., 2004, 21(12): 2351-2354.
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]. Chin. Phys. Lett., 2004, 21(12): 2351-2354.