The SU(2)l x U(1) electroweak model. Local U(1) invariance and QED -- Global symmetry structure of the strong interactions -- Fermi theory of the weak interactions -- Nambu-Goldstone realization of SU(2)a -- Yang-Mills theory -- Quantum chromodynamics -- SU(2)l x U(1) invariant Lepton couplings to the electroweak vectors -- Abelian Higgs model -- Standard electroweak model -- The Higgs Boson -- Global symmetries versus local invariance -- Limitations and challenges of the standard model -- Appendix A.2. Notations and conventions ; Appendix A.2. The SU(2)l x U(1) electroweak model.
Summary:
Symmetry and its various realizations have played a pivotal role in the development of the extremely well tested Standard Model of the strong, weak and electromagnetic interactions. In this Element, the author traces the development of the model through the interplay of the different symmetries realized in the various components of the model as well as in other sub-fields of physics.
Series:
Cambridge elements: physics beyond the standard model with atomic and molecular systems
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