Spectral stability of small amplitude solitary waves of the Dirac equation with the Soler-type nonlinearity

Spectral stability of small amplitude solitary waves of the Dirac equation with the Soler-type nonlinearity
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具有Soler型非线性的Dirac方程小振幅孤立波的谱稳定性

DOI:
10.1016/j.jfa.2019.108289
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发表时间:
2017
影响因子:
1.7
通讯作者:
A. Comech
A. Comech
中科院分区:
数学1区
文献类型:
--
作者:
N. Boussaid;A. Comech

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本文研究了Rn中非线性Dirac方程(称为Soler模型)在孤波解<$ω(x)e− i ω t处线性化的点谱,其中n≥ 1,非线性项为f(<$$> β <$)β <$.本文主要讨论了当f∈ C 1(R <${0}),f(τ)= 0时,在非相对论极限ω→ m− 0中,谱稳定性,即不存在具有正真实的部的本征值| τ| C++ O(| τ| K)对于τ→ 0,其中0< κ< K。当n≥ 1时,我们证明了电荷亚临界情形κ = 2/n(特别是当n= 1时,1< κ≤ 2)和“电荷临界情形”κ= 2/n(K> 4/n)的小振幅孤立波(ω m)的谱稳定性.稳定性分析的一个重要部分是证明在±2 m i处嵌入阈值点的非零实部特征值不存在分叉。我们的方法是基于构建一个新的家庭的精确的双频孤立波解的Soler模型和分析的行为的“非线性特征值”(全纯算子值函数的特征根)。
We study the point spectrum of the linearization at a solitary wave solution ϕ ω (x) e− i ω t to the nonlinear Dirac equation in R n, for all n≥ 1, with the nonlinear term given by f (ψ⁎ β ψ) β ψ (known as the Soler model). We focus on the spectral stability, that is, the absence of eigenvalues with positive real part, in the non-relativistic limit ω→ m− 0, in the case when f∈ C 1 (R∖{0}), f (τ)=| τ| κ+ O (| τ| K) for τ→ 0, with 0< κ< K. For n≥ 1, we prove the spectral stability of small amplitude solitary waves (ω⪅ m) for the charge-subcritical cases κ⪅ 2/n (in particular, 1< κ≤ 2 when n= 1) and for the “charge-critical case” κ= 2/n (with K> 4/n). An important part of the stability analysis is the proof of the absence of bifurcation of nonzero-real-part eigenvalues from the embedded threshold points at±2 m i. Our approach is based on constructing a new family of exact bi-frequency solitary wave solutions in the Soler model and on the analysis of the behavior of “nonlinear eigenvalues”(characteristic roots of holomorphic operator-valued functions).
DOI: 10.1137/050648389
发表时间: 2006-11
期刊: SIAM J. Math. Anal.
影响因子: --
作者:
Shu-Ming Chang;S. Gustafson;K. Nakanishi;Tai-Peng Tsai
通讯作者: Shu-Ming Chang;S. Gustafson;K. Nakanishi;Tai-Peng Tsai
非线性薛定谔能量空间的渐近稳定性和完备性
DOI: --
发表时间: 2004
期刊: Int.Math.Res.Not. 2004(66)
影响因子: --
作者:
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通讯作者: T.-P.Tsai
索引定理1
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
Tanaka;K.;Sugihara;M.;Murota;K.;Mori;K.;K.-I.Yoshikawa;古田 幹雄
通讯作者: 古田 幹雄