One-boson scattering processes in the massless Spin-Boson model – A non-perturbative formula
One-boson scattering processes in the massless Spin-Boson model – A non-perturbative formula
复制标题
无质量自旋玻色子模型中的单玻色子散射过程 â 非微扰公式
DOI:
10.1016/j.aim.2020.107248
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
J. F. Hänle
中科院分区:
文献类型:
--
作者:
M. Ballesteros;D.-A. Deckert;J. F. Hänle
In scattering experiments, physicists observe so-called resonances as peaks at certain energy values in the measured scattering cross sections per solid angle. These peaks are usually associate with certain scattering processes, e.g., emission, absorption, or excitation of certain particles and systems. On the other hand, mathematicians define resonances as poles of an analytic continuation of the resolvent operator through complex dilations. A major challenge is to relate these scattering and resonance theoretical notions, e.g., to prove that the poles of the resolvent operator induce the above mentioned peaks in the scattering matrix. In the case of quantum mechanics, this problem was addressed in numerous works that culminated in Simon's seminal paper [33] in which a general solution was presented for a large class of pair potentials. However, in quantum field theory the analogous problem has been open for several decades despite the fact that scattering and resonance theories have been well-developed for many models. In certain regimes these models describe very fundamental phenomena, such as emission and absorption of photons by atoms, from which quantum mechanics originated. In this work we present a first non-perturbative formula that relates the scattering matrix to the resolvent operator in the massless Spin-Boson model. This result can be seen as a major progress compared to our previous works [14] and [12] in which we only managed to derive a perturbative formula.
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影响因子:
2.4
作者:
M. Ballesteros;D.-A. Deckert;F. Hänle
通讯作者:
F. Hänle
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
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
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
J. Faupin;I. Sigal
通讯作者:
I. Sigal