Charged Matter: Physics and Renormalisation
Emili Bagan, Martin Lavelle, David McMullan
TL;DR
This paper discusses the ground state descriptions in unbroken gauge theories with charged particles, showing that certain scattering variables in QED are free of infrared divergences and can be multiplicatively renormalised.
Contribution
It demonstrates that on-shell Green's functions and S-matrix elements for charged particles in QED are free of infrared divergences and are multiplicatively renormalisable.
Findings
Infrared divergences are absent in on-shell Green's functions and S-matrix elements for charged particles.
Charged particle variables in QED can be multiplicatively renormalised.
Ground state descriptions in unbroken gauge theories are clarified.
Abstract
Descriptions of the ground state in unbroken gauge theories with charged particles are discussed. In particular it is shown that the on-shell Green's functions and S-matrix elements corresponding to the scattering of these variables in QED are free of soft and phase infra red divergences and that these variables may be multiplicatively renormalised.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-pressure geophysics and materials · High-Energy Particle Collisions Research