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
复制标题
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
中科院分区:
文献类型:
--
作者:
N. Boussaid;A. Comech
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
DOI:
--
发表时间:
2004
期刊:
Int.Math.Res.Not. 2004(66)
影响因子:
--
作者:
S.Gustafson;K.Nakanishi;T.-P.Tsai
通讯作者:
T.-P.Tsai
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