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Chen Liang Green's function method to the ground state properties of a two-component Bose - Einstein condensate / Chen Liang, Kong Wei , B. J. Ye, H. M. Wen, X. Y. Zhou, R. D. Han // Физика низ. температур. - 2011. - 37, № 7. - С. 708-714. - Библиогр.: 20 назв. - англ.The elementary excitation spectrum of a two-component Bose - Einstein condensate is obtained by Green's function method. It is found to have two branches. In the long-wave limit, the two branches of the excitation spectrum are reduced to one phonon excitation and one single-particle excitation. With the obtained excitation spectrum and the Green's functions, the depletion of the condensate and the ground state energy have also been calculated in this paper. Індекс рубрикатора НБУВ: В317.233
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Шифр НБУВ: Ж14063 Пошук видання у каталогах НБУВ
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