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arXiv 1111.1888math.APmath-phmath.MP
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一种极小化方法及其在孤立子研究中的应用

A minimization method and applications to the study of solitons

Vieri Benci, Donato Fortunato

摘要:

粗略地说,孤波是场方程的解,其能量作为局部化的包传播,并且在时间上保持这种局部化。孤子是一种孤波,它表现出某种强稳定性,因此具有类似粒子的行为。在本文中,我们证明了一个一般的,抽象的定理(定理26),它允许证明一类孤子的存在性。这样的孤子是一个约束泛函的适当的极小化,他们被称为半纯孤子。然后,我们将抽象理论应用到与非线性薛定谔方程(NSE)和非线性克莱因-戈登方程(NKG)相关的问题。

英文摘要:

Roughly speaking a solitary wave is a solution of a field equation whose energy travels as a localized packet and which preserves this localization in time. A soliton is a solitary wave which exhibits some strong form of stability so that it has a particle-like behavior. In this paper, we prove a general, abstract theorem (Theorem 26) which allows to prove the ex istence of a class of solitons. Such solitons are suitable minimizers of a constrained functional and they are called hylomorphic solitons. Then we apply the abstract theory to problems related to the nonlinear Schrödinger equation (NSE) and to the nonlinear Klein-Gordon equation (NKG).

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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