Lax–Phillips scattering theory of a relativistic quantum field theoretical Lee–Friedrichs model and Lee–Oehme–Yang–Wu phenomenology

A Democritean Phenomenology for Quantum Scattering Theory*

Granted that the basic logical requirement of a particle theory is to be able to assert that a particle is “here” “now” rather than “there” and/or “then”, the implied operational device is a system of particle detectors which can make these basic discriminations. Given such devices, their successful operation requires the existence of a limiting velocity. Given devices that can change particle ...

Scattering in Relativistic Quantum Field Theory: Fundamental Concepts and Tools

We provide a brief overview of the basic tools and concepts of quantum field theoretical scattering theory. This article is commissioned by the Encyclopedia of Mathematical Physics, edited by J.-P. Françoise, G. Naber and T.S. Tsun, to be published by the Elsevier publishing house. 1 Physical Motivation and Mathematical Setting The primary connection of relativistic quantum field theory to expe...

Relativistic Quantum Field Theory

8.324 Relativistic Quantum Field Theory II

The renormalization program has been shown to be a success operationally: 1. For a renormalizable theory, all ultraviolet divergences can be absorbed into redefinitions of bare quan­ tities, which are not observable. What is meant by the set of physical observables is unambiguous: it is well-defined in terms of a small number of physical couplings, masses and so forth. 2. The requirement of ren...

Introduction to Relativistic Quantum Field Theory