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I. Current commutators in quantum electrodynamics. II. Electromagnetic mass differences of the pseudoscalar meson and baryon octets

Citation

Nagylaki, Thomas Andrew (1970) I. Current commutators in quantum electrodynamics. II. Electromagnetic mass differences of the pseudoscalar meson and baryon octets. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/JR6Z-QH92. https://resolver.caltech.edu/CaltechTHESIS:08112015-145614940

Abstract

This thesis is in two parts. In the first section, the operator structure of the singular terms in the equal-time commutator of space and time components of the electromagnetic current is investigated in perturbation theory by establishing a connection with Feynman diagrams. It is made very plausible that the singular term is a c number. Some remarks are made about the same problem in the electrodynamics of a spinless particle.

In the second part, an SU(3) symmetric multi-channel calculation of the electromagnetic mass differences in the pseudoscalar meson and baryon octets is carried out with an attempt to include some of the physics of the crossed (pair annihilation) channel along the lines of the recent work by Ball and Zachariasen. The importance of the tensor meson Regge trajectories is emphasized. The agreement with experiment is poor for the isospin one mass differences, but excellent for those with isospin two.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Zachariasen, Fredrik
Thesis Committee:
  • Unknown, Unknown
Defense Date:15 October 1969
Funders:
Funding AgencyGrant Number
National Research Council of CanadaUNSPECIFIED
CaltechUNSPECIFIED
Record Number:CaltechTHESIS:08112015-145614940
Persistent URL:https://resolver.caltech.edu/CaltechTHESIS:08112015-145614940
DOI:10.7907/JR6Z-QH92
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9096
Collection:CaltechTHESIS
Deposited By: Benjamin Perez
Deposited On:11 Aug 2015 22:08
Last Modified:20 Dec 2019 19:17

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