Analyticity of resonances and eigenvalues and spectral properties of the massless Spin–Boson model
Analyticity of resonances and eigenvalues and spectral properties of the massless Spin–Boson model
复制标题
无质量自旋玻色子模型的共振和特征值以及谱特性的解析性
DOI:
10.1016/j.jfa.2019.02.008
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发表时间:
2019
影响因子:
1.7
通讯作者:
F. Hänle
中科院分区:
文献类型:
--
作者:
M. Ballesteros;D.-A. Deckert;F. Hänle
We extend the method of Pizzo multiscale analysis for resonances introduced in [5] in order to infer analytic properties of resonances and eigenvalues (and their eigenprojections) as well as estimates for the localization of the spectrum of dilated Hamiltonians and norm-bounds for the corresponding resolvent operators, in neighborhoods of resonances and eigenvalues. We apply our method to the massless Spin–Boson model assuming a slight infrared regularization. We prove that the resonance and the ground-state eigenvalue (and their eigenprojections) are analytic with respect to the dilation parameter and the coupling constant. Moreover, we prove that the spectrum of the dilated Spin–Boson Hamiltonian in the neighborhood of the resonance and the ground-state eigenvalue is localized in two cones in the complex plane with vertices at the location of the resonance and the ground-state eigenvalue, respectively. Additionally, we provide norm-estimates for the resolvent of the dilated Spin–Boson Hamiltonian near the resonance and the ground-state eigenvalue. The topic of analyticity of eigenvalues and resonances has let to several studies and advances in the past. However, to the best of our knowledge, this is the first time that it is addressed from the perspective of Pizzo multiscale analysis. Once the multiscale analysis is set up our method gives easy access to analyticity: Essentially, it amounts to proving it for isolated eigenvalues only and use that uniform limits of analytic functions are analytic. The type of spectral and resolvent estimates that we prove are needed to control the time evolution including the scattering regime. The latter will be demonstrated in a forthcoming publication. The introduced multiscale method to study spectral and resolvent estimates follows its own inductive scheme and is independent (and different) from the method we apply to construct resonances.
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DOI:
10.1016/j.jfa.2011.07.023
发表时间:
2010
期刊:
arXiv: Mathematical Physics
影响因子:
--
作者:
D. Hasler;I. Herbst
通讯作者:
I. Herbst
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
A. Pizzo
通讯作者:
A. Pizzo
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
A. Pizzo
通讯作者:
A. Pizzo
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
V. Bach;M. Ballesteros;M. Konenberg;Lars Menrath
通讯作者:
Lars Menrath
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
J. Faupin
通讯作者:
J. Faupin