The Massless Nelson Hamiltonian and Its Domain
The Massless Nelson Hamiltonian and Its Domain
复制标题
无质量纳尔逊哈密顿量及其定义域
DOI:
--
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Julian Schmidt
中科院分区:
文献类型:
--
作者:
Julian Schmidt
In the theory of point interactions, one is given a formal expression for a quantum mechanical Hamiltonian. The interaction terms of the Hamiltonian are singular: they can not be rigorously defined as a perturbation (in the operator or form sense) of an unperturbed free operator. A similar situation occurs in Quantum Field Theory, where it is known as the ultraviolet problem. Recently, it was shown that some of the tools used in the context of point interactions can be adapted to solve the problem of directly defining a Hamiltonian for the Nelson model. This model provides a well studied example of a bosonic quantum field that is linearly coupled to nonrelativistic particles. The novel method employs so called abstract interior-boundary conditions to explicitly characterise the action and the domain of the Hamiltonian without the need for a renormalisation procedure. Here, for the first time, the method of interior-boundary conditions is applied to the massless Nelson model. Neither ultraviolet nor infrared cutoffs are needed.
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DOI:
10.1088/1751-8121/ab034c
发表时间:
2019
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
J. Schmidt;R. Tumulka
通讯作者:
R. Tumulka
DOI:
10.1063/1.5018579
发表时间:
2018
期刊:
arXiv: Mathematical Physics
影响因子:
--
作者:
M. Griesemer;A. Wünsch
通讯作者:
A. Wünsch
DOI:
10.1007/s11040-018-9270-8
发表时间:
2018
期刊:
Mathematical Physics, Analysis and Geometry
影响因子:
--
作者:
J. Lampart;J. Schmidt;S. Teufel;R. Tumulka
通讯作者:
R. Tumulka
影响因子:
2.4
作者:
J. Lampart;J. Schmidt
通讯作者:
J. Schmidt
影响因子:
1.3
作者:
J. Schmidt
通讯作者:
J. Schmidt