COLLAPSE AND BOSE-EINSTEIN CONDENSATION IN A TRAPPED BOSE GAS WITH NEGATIVE SCATTERING LENGTH
COLLAPSE AND BOSE-EINSTEIN CONDENSATION IN A TRAPPED BOSE GAS WITH NEGATIVE SCATTERING LENGTH
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DOI：
10.1103/physrevlett.81.933
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发表时间：
1998-01
影响因子：
8.6
通讯作者：
Y. Kagan;A. Muryshev;G. Shlyapnikov
中科院分区：
文献类型：
--
作者：
Y. Kagan;A. Muryshev;G. Shlyapnikov
负散射长度玻色凝聚体的演化和坍缩是由玻色凝聚原子的三体复合和来自非平衡热云的凝聚体的供给决定的。一旦凝聚态原子的数量达到临界值，坍缩就开始了，当密度变得如此之高以至于复合损失超过了粒子间的相互作用时，坍缩就停止了，并转向膨胀。因此，我们得到一个序列的崩溃，其中每一个其次是动态振荡的凝聚。在每一次坍缩中，三体复合只燃烧一部分玻色凝聚的原子。
Evolution and collapse of a trapped Bose condensate with negative scattering length are predetermined by 3-body recombination of Bose-condensed atoms and by feeding of the condensate from the nonequilibrium thermal cloud. The collapse, starting once the number of condensate atoms reaches the critical value, ceases and turns to expansion when the density becomes so high that the recombination losses dominate over attractive interparticle interaction. As a result, we obtain a sequence of collapses, each of them followed by dynamic oscillations of the condensate. In every collapse the 3-body recombination burns only a part of the Bose-condensed atoms.