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arXiv 0904.0480cond-mat.quant-gascond-mat.other
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费什巴赫共振处理在紧束缚玻色-爱因斯坦凝聚体中的应用

Application of the Feshbach-resonance management to a tightly confined Bose-Einstein condensate

Giovanni Filatrella, Boris A. Malomed, Luca Salasnich

摘要:

利用非多项式薛定谔方程(NPSE)研究了雪茄形势阱中BEC的有效非线性项的时间周期调制对物质波孤子崩溃和稳定的抑制作用.通过系统仿真,在调制幅度和频率的平面中确定稳定区域。在低频区域,孤子具有混沌演化的特征,尽管它们仍然是鲁棒的对象。

英文摘要:

We study suppression of the collapse and stabilization of matter-wave solitons by means of time-periodic modulation of the effective nonlinearity, using the nonpolynomial Schroedinger equation (NPSE) for BEC trapped in a tight cigar-shaped potential. By means of systematic simulations, a stability region is identified in the plane of the modulation amplitude and frequency. In the low-frequency regime, solitons feature chaotic evolution, although they remain robust objects.

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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