Coulomb Scattering in the Massless Nelson Model I. Foundations of Two-Electron Scattering
Coulomb Scattering in the Massless Nelson Model I. Foundations of Two-Electron Scattering
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无质量尼尔森模型 I 中的库仑散射是二电子散射的基础
DOI:
10.1007/s10955-013-0857-y
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发表时间:
2014
影响因子:
1.6
通讯作者:
A. Pizzo
中科院分区:
文献类型:
--
作者:
W. Dybalski;A. Pizzo
We construct two-electron scattering states and verify their tensor product structure in the infrared-regular massless Nelson model. The proof follows the lines of Haag-Ruelle scattering theory: Scattering state approximants are defined with the help of two time-dependent renormalized creation operators of the electrons acting on the vacuum. They depend on the ground state wave functions of the (single-electron) fiber Hamiltonians with infrared cut-off. The convergence of these approximants ast→∞ is shown with the help of Cook’s method combined with a non-stationary phase argument. The removal of the infrared cut-off in the limitt→∞ requires sharp estimates on the derivatives of these ground state wave functions w.r.t. electron and photon momenta, with mild dependence on the infrared cut-off. These key estimates, which carry information about the localization of the electrons in space, are obtained in a companion paper with the help of iterative analytic perturbation theory. Our results hold in the weak coupling regime.
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