Author:
Beyn Wolf-Jürgen,Otten Denny
Abstract
In this paper, we study the spectra and Fredholm properties of Ornstein–Uhlenbeck operators
where
is the profile of a rotating wave satisfying
as
, the map
is smooth and the matrix
has eigenvalues with positive real parts and commutes with the limit matrix
. The matrix
is assumed to be skew-symmetric with eigenvalues (λ
1
,…,λ
d
)=(±i
σ
1
,…,±i
σ
k
,0,…,0). The spectra of these linearized operators are crucial for the nonlinear stability of rotating waves in reaction–diffusion systems. We prove under appropriate conditions that every
satisfying the dispersion relation
belongs to the essential spectrum
in
L
p
. For values Re λ to the right of the spectral bound for
, we show that the operator
is Fredholm of index 0, solve the identification problem for the adjoint operator
and formulate the Fredholm alternative. Moreover, we show that the set
belongs to the point spectrum
in
L
p
. We determine the associated eigenfunctions and show that they decay exponentially in space. As an application, we analyse spinning soliton solutions which occur in the Ginzburg–Landau equation and compute their numerical spectra as well as associated eigenfunctions. Our results form the basis for investigating the nonlinear stability of rotating waves in higher space dimensions and truncations to bounded domains. This article is part of the themed issue ‘Stability of nonlinear waves and patterns and related topics’.
Subject
General Physics and Astronomy,General Engineering,General Mathematics
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献