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arXiv 1302.5012math-phmath.MP
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无质量Nelson模型II中的库仑散射。基态的规则性

Coulomb scattering in the massless Nelson model II. Regularity of ground states

Wojciech Dybalski, Alessandro Pizzo

摘要:

对于无质量的Nelson模型,我们提供了有关纤维单电子哈密顿量$H_{P,σ}$的归一化基态$\checkψ_{P,σ}$对总动量$P$和红外截止$σ$的依赖性的详细信息。这一信息的迭代解析微扰理论的帮助下获得。特别地,我们推导出的形式\[ \|\partial_{P_i}\checkψ_{P,σ}\|,\ \| \partial_{P_i} \partial_{P_j}\checkψ_{P,σ} \|\leq \frac{c}{σ^{δ_{λ_0}}}, \]的一些常数$c$和最大容许耦合常数$λ_0\mapsto δ_{λ_0}$ s. t的函数的界限。$\lim_{λ_0\to 0}δ_{λ_0}=0$。这些结果在红外正则和红外奇异的情况下都成立。它们在本系列的第一部分中被利用来沿着Haag-Ruelle散射理论的路线在红外正则无质量Nelson模型(在没有红外截止的情况下)中构造双电子散射态。它们也应该与红外奇异纳尔逊模型中两个亚粒子的散射问题有关,其解决方案是本系列论文的目标。虽然一个更大的调查的一部分,目前的工作是在一个独立的方式写。

英文摘要:

For the massless Nelson model we provide detailed information about the dependence of the normalized ground states $\checkψ_{P,σ}$ of the fiber single-electron Hamiltonians $H_{P,σ}$ on the total momentum $P$ and the infrared cut-off $σ$. This information is obtained with the help of the iterative analytic perturbation theory. In particular, we derive bounds of the form \[ \|\partial_{P_i}\checkψ_{P,σ}\|,\ \| \partial_{P_i} \partial_{P_j}\checkψ_{P,σ} \|\leq \frac{c}{σ^{δ_{λ_0}}}, \] for some constant $c$ and a function of the maximal admissible coupling constant $λ_0\mapsto δ_{λ_0}$ s.t. $\lim_{λ_0\to 0}δ_{λ_0}=0$. These results hold both in the infrared-regular and infrared-singular case. They are exploited in part I of this series to construct the two-electron scattering states in the infrared-regular massless Nelson model (in the absence of an infrared cut-off) along the lines of Haag-Ruelle scattering theory. They should also be relevant for the problem of scattering of two infraparticles in the infrared-singular Nelson model, whose solution is the goal of this series of papers. Although a part of a larger investigation, the present work is written in a self-contained fashion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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