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arXiv 0801.4964cond-mat.other
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光晶格中玻色-爱因斯坦凝聚体的脉动不稳定性

Pulsating instability of a Bose-Einstein condensate in an optical lattice

Uttam Shrestha, Marijan Kostrun, Juha Javanainen

摘要:

数值计算发现,在弱相互作用的限制下,光晶格中的玻色-爱因斯坦凝聚体可能发展出脉动的动力学不稳定性,即原子在晶格中的占位数几乎周期性地形成一个峰值,然后回到不稳定的初始状态.也可能出现表现类似的多个峰。简单的论证表明,脉动不稳定性是可积性的一个残量,并给出了相应的物理尺度。

英文摘要:

We find numerically that in the limit of weak atom-atom interactions a Bose-Einstein condensate in an optical lattice may develop a pulsating dynamical instability in which the atoms nearly periodically form a peak in the occupation numbers of the lattice sites, and then return to the unstable initial state. Multiple peaks behaving similarly may also occur. Simple arguments show that the pulsating instability is a remnant of integrability, and give a handle on the relevant physical scales.

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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