The Feynman-Dyson view

10th Biennial Conference on Classical and Quantum Relativistic Dynamics of Particles and Fields

Gill, Tepper L.^1

Department of Mathematics, Physics and EandCE, Howard University, Washington

DC

20059, United States^1

关键词: Mathematical foundations;    Non-perturbative solutions;    Operator calculus;    Perturbative expansion;    Physical analysis;    Quantum electrodynamics;    Remainder terms;    Representation theory;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/845/1/012023/pdf
DOI  :  10.1088/1742-6596/845/1/012023

来源: IOP

【 摘 要 】

This paper is a survey of our work on the mathematical foundations for the Feynman-Dyson program in quantum electrodynamics (QED). After a brief discussion of the history, we provide a representation theory for the Feynman operator calculus. This allows us to solve the general initial-value problem and construct the Dyson series. We show that the series is asymptotic, thus proving Dyson's second conjecture for quantum electrodynamics. In addition, we show that the expansion may be considered exact to any finite order by producing the remainder term. This implies that every nonperturbative solution has a perturbative expansion. Using a physical analysis of information from experiment versus that implied by our models, we reformulate our theory as a sum over paths. This allows us to relate our theory to Feynman's path integral, and to prove Dyson's first conjecture that the divergences are in part due to a violation of Heisenberg's uncertainly relations. As a by-product, we also prove Feynman's conjecture about the relationship between the operator calculus and has path integral. Thus, providing the first rigorous justification for the Feynman formulation of quantum mechanics.