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Green’s function method to the ground state properties of a two-component Bose–Einstein condensate
Репозиторій DSpace/Manakin
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Green’s function method to the ground state properties of a two-component Bose–Einstein condensate
Тема:
Бозе-эйнштейновская конденсация
Інший ID:
PACS: 03.75.Nt
Посилання:
Green’s function method to the ground state properties of a two-component Bose–Einstein condensate / C. Liang, K. Wei, B.J. Ye, H.M. Wen, X.Y. Zhou, R.D. Han // Физика низких температур. — 2011. — Т. 37, № 7. — С. 708–714. — Бібліогр.: 20 назв. — англ.
Підтримка:
This work has been supported by the NSF-China under grants Nos. 10974189, 10675114 and 10675115.
Дата:
2011
Переглядів:
568
Завантажень:
483
Анотація:
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.
