Abstract
The Glashow–Salam–Weinberg theory combines the electromagnetic and weak interactions within the framework of the gauge group SU(2)×SU(1). This theory treats leptons and quarks on the same footing. However, the fact that leptons carry integer charge while the charge of quarks is 1/3 is needed as a basic input. On the other hand, there are indications that this fact is due to some superior principle, that is a larger symmetry. This leads to the hypothesis that the gauge group of the Glashow–Salam–Weinberg theory, SU(2)×SU(1), and the SU(3) group of the strong interaction form part of a larger symmetry. The simplest group that incorporates the product SU(3)×SU(2)×SU(1) as a subgroup is SU(5). A model for the unification of the three interactions based on the group SU(5) was proposed by Georgi and Glashow.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Greiner, W., Müller, B. (2009). Unified Gauge Theories. In: Gauge Theory of Weak Interactions. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-87843-8_9
Download citation
DOI: https://doi.org/10.1007/978-3-540-87843-8_9
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-87842-1
Online ISBN: 978-3-540-87843-8
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)