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arXiv 0903.5019quant-ph
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量子力学中的非线性现象学:晶格中的孤子

Nonlinear Phenomenology from Quantum Mechanics: Soliton in a Lattice

Juha Javanainen, Uttam Shrestha

摘要:

利用精确数值解和量子蒙特卡罗模拟研究了玻色原子光晶格中的孤子。的状态的计算相结合的一个明确的帐户的原子数的测量在晶格网站。特别是,量子蒙特卡罗方法中的重要性采样可以说产生了对单个实验的忠实模拟。尽管量子态在晶格平移下是不变的,但实验可能会显示出局域经典孤立子的噪声版本。

英文摘要:

We study a soliton in an optical lattice holding bosonic atoms quantum mechanically using both an exact numerical solution and quantum Monte Carlo simulations. The computation of the state is combined with an explicit account of the measurements of the numbers of the atoms at the lattice sites. In particular, importance sampling in the quantum Monte Carlo method arguably produces faithful simulations of individual experiments. Even though the quantum state is invariant under lattice translations, an experiment may show a noisy version of the localized classical soliton.

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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