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arXiv 1210.1609math.APmath-phmath.MP
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具有周期位势的非局部Gross-Pitaevskii方程

On Nonlocal Gross-Pitaevskii Equations with Periodic Potentials

Christopher W. Curtis

摘要:

Gross-Pitaevskii方程是物理学中广泛使用的模型,特别是在玻色-爱因斯坦凝聚的背景下。然而,它只考虑粒子之间的局部相互作用。本文证明了使用非本地制定的本地模型的推广的有效性。特别地,本文证明了当非局部模型逼近局部模型时,非局部模型的解在范数上逼近局部模型的解。Gross-Pitaevskii方程的非定域性和势是相当普遍的,因此本文表明,人们可以很容易地将非定域效应添加到感兴趣的玻色-爱因斯坦凝聚模型中。基于对非局部Gross-Pitaevskii方程的势函数的特殊选择,我们建立了一类非局部问题的参数依赖解的轨道稳定性.数值结果证实了分析的稳定性结果,并导致在本文建立的理论范围之外的参数值的类的解决方案的稳定性的预测。

英文摘要:

The Gross-Pitaevskii equation is a widely used model in physics, in particular in the context of Bose-Einstein condensates. However, it only takes into account local interactions between particles. This paper demonstrates the validity of using a nonlocal formulation as a generalization of the local model. In particular, the paper demonstrates that the solution of the nonlocal model approaches in norm the solution of the local model as the nonlocal model approaches the local model. The nonlocality and potential used for the Gross-Pitaevskii equation are quite general, thus this paper shows that one can easily add nonlocal effects to interesting classes of Bose-Einstein condensate models. Based on a particular choice of potential for the nonlocal Gross-Pitaevskii equation, we establish the orbital stability of a class of parameter-dependent solutions to the nonlocal problem for certain parameter regimes. Numerical results corroborate the analytical stability results and lead to predictions about the stability of the class of solutions for parameter values outside of the purview of the theory established in this paper.

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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