Relation Between the Resonance and the Scattering Matrix in the Massless Spin-Boson Model
Relation Between the Resonance and the Scattering Matrix in the Massless Spin-Boson Model
复制标题
无质量自旋玻色子模型中共振与散射矩阵的关系
DOI:
10.1007/s00220-019-03481-w
复制
发表时间:
2019
影响因子:
2.4
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 establish the precise relation between the integral kernel of the scattering matrix and the resonance in the massless Spin-Boson model which describes the interaction of a two-level quantum system with a second-quantized scalar field. For this purpose, we derive an explicit formula for the two-body scattering matrix. We impose an ultraviolet cut-off and assume a slightly less singular behavior of the boson form factor of the relativistic scalar field but no infrared cut-off. The purpose of this work is to bring together scattering and resonance theory and arrive at a similar result as provided by Simon (Ann Math Sect Ser 97(2):247–274, 1973), where it was shown that the singularities of the meromorphic continuation of the integral kernel of the scattering matrix are located precisely at the resonance energies. The corresponding problem has been open in quantum field theory ever since. To the best of our knowledge, the presented formula provides the first rigorous connection between resonance and scattering theory in the sense of (Simon 1973) in a model of quantum field theory.
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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:
2003
期刊:
影响因子:
--
作者:
A. Pizzo
通讯作者:
A. Pizzo
影响因子:
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作者:
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通讯作者:
I. Sigal
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
M. Hübner;H. Spohn
通讯作者:
H. Spohn
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
V. Bach;F. Klopp;H. Zenk
通讯作者:
H. Zenk