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arXiv 0910.0035cond-mat.quant-gasnlin.PS
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原子玻色-爱因斯坦凝聚体中三轴亮孤子的坍缩

Collapse of triaxial bright solitons in atomic Bose-Einstein condensates

G. Mazzarella, L. Salasnich

摘要:

本文研究了由吸引玻色凝聚原子构成的三轴亮孤子,其特征是在纵向上没有禁闭,但在横向上被各向异性的谐振势捕获。通过数值求解三维Gross-Pitaevskii方程,我们研究了横向陷阱各向异性对临界相互作用强度的影响,在临界相互作用强度以上,凝聚体会崩溃。与以前的预测[Phys. Rev. A { \bf 66},043619(2002)]的比较显示了大的各向异性的显著差异。

英文摘要:

We study triaxial bright solitons made of attractive Bose-condensed atoms characterized by the absence of confinement in the longitudinal axial direction but trapped by an anisotropic harmonic potential in the transverse plane. By numerically solving the three-dimensional Gross-Pitaevskii equation we investigate the effect of the transverse trap anisotropy on the critical interaction strength above which there is the collapse of the condensate. The comparison with previous predictions [Phys. Rev. A {\bf 66}, 043619 (2002)] shows significant differences for large anisotropies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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