Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition
We investigate the spectrum of the differential operator Lλ defined by the Klein-Gordon s-wave equation y″+(λ−q(x))2y=0, x∈ℝ+=[0,∞), subject to the spectral parameter-dependent boundary condition y′(0)−(aλ+b)y(0)=0 in the space L2(ℝ+), where a≠±i, b are complex constants, q is a complex-valued funct...
Main Author: | |
---|---|
Format: | Article |
Language: | English |
Published: |
Hindawi Limited
2004-01-01
|
Series: | International Journal of Mathematics and Mathematical Sciences |
Online Access: | http://dx.doi.org/10.1155/S0161171204203088 |
id |
doaj-aa313a7c8c51447fa3e24aedb0bcb856 |
---|---|
record_format |
Article |
spelling |
doaj-aa313a7c8c51447fa3e24aedb0bcb8562020-11-24T23:15:14ZengHindawi LimitedInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252004-01-012004271437144510.1155/S0161171204203088Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary conditionGülen Başcanbaz-Tunca0Department of Mathematics, Faculty of Science, Ankara University, Tandogan, Ankara 06100, TurkeyWe investigate the spectrum of the differential operator Lλ defined by the Klein-Gordon s-wave equation y″+(λ−q(x))2y=0, x∈ℝ+=[0,∞), subject to the spectral parameter-dependent boundary condition y′(0)−(aλ+b)y(0)=0 in the space L2(ℝ+), where a≠±i, b are complex constants, q is a complex-valued function. Discussing the spectrum, we prove that Lλ has a finite number of eigenvalues and spectral singularities with finite multiplicities if the conditions limx→∞q(x)=0, supx∈R+{exp(ϵx)|q′(x)|}<∞, ϵ>0, hold. Finally we show the properties of the principal functions corresponding to the spectral singularities.http://dx.doi.org/10.1155/S0161171204203088 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gülen Başcanbaz-Tunca |
spellingShingle |
Gülen Başcanbaz-Tunca Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition International Journal of Mathematics and Mathematical Sciences |
author_facet |
Gülen Başcanbaz-Tunca |
author_sort |
Gülen Başcanbaz-Tunca |
title |
Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition |
title_short |
Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition |
title_full |
Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition |
title_fullStr |
Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition |
title_full_unstemmed |
Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition |
title_sort |
spectral properties of the klein-gordon s-wave equation with spectral parameter-dependent boundary condition |
publisher |
Hindawi Limited |
series |
International Journal of Mathematics and Mathematical Sciences |
issn |
0161-1712 1687-0425 |
publishDate |
2004-01-01 |
description |
We investigate the spectrum of the differential operator
Lλ defined by the Klein-Gordon s-wave equation
y″+(λ−q(x))2y=0, x∈ℝ+=[0,∞),
subject to the spectral parameter-dependent boundary condition
y′(0)−(aλ+b)y(0)=0 in the space L2(ℝ+), where a≠±i, b are complex
constants, q is a complex-valued function. Discussing the
spectrum, we prove that Lλ has a finite number of
eigenvalues and spectral singularities with finite multiplicities
if the conditions limx→∞q(x)=0, supx∈R+{exp(ϵx)|q′(x)|}<∞,
ϵ>0, hold. Finally we show the properties of the
principal functions corresponding to the spectral singularities. |
url |
http://dx.doi.org/10.1155/S0161171204203088 |
work_keys_str_mv |
AT gulenbascanbaztunca spectralpropertiesofthekleingordonswaveequationwithspectralparameterdependentboundarycondition |
_version_ |
1725591528968028160 |