تقرير
Ground-State Wave Function with Interactions between Different Species in $M$-Component Miscible Bose-Einstein Condensates
| العنوان: | Ground-State Wave Function with Interactions between Different Species in $M$-Component Miscible Bose-Einstein Condensates |
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| المؤلفون: | Kohno, Wataru, Kirikoshi, Akimitsu, Kita, Takafumi |
| المصدر: | Journal of the Physical Society of Japan 87, 034002 (2018) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases |
| الوصف: | We construct a variational ground-state wave function of weakly interacting M-component Bose-Einstein condensates beyond the mean-field theory by incorporating the dynamical 3/2-body processes, where one of the two colliding particles drops into the condensate and vice versa. Our numerical results with various masses and particle numbers show that the 3/2-body processes between different particles make finite contributions to lowering the ground-state energy, implying that many-body correlation effects between different particles are essential even in the weak-coupling regime of the Bose--Einstein condensates. We also consider the stability condition for $2$-component miscible states using the new ground-state wave function. Through this calculation, we obtain the relation $U^{2}_{AB}/U_{AA}U_{BB}<1+\alpha$, where $U_{ij}$ is the effective contact potential between particles $i$ and $j$ and $\alpha$ is the correction, which originates from the $3/2$-body and $2$-body processes. Comment: 9 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.7566/JPSJ.87.034002 |
| URL الوصول: | http://arxiv.org/abs/1802.04937 |
| رقم الأكسشن: | edsarx.1802.04937 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.7566/JPSJ.87.034002 |
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