Non-anomalous global sym in SM?

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SUMMARY

The discussion centers on the existence of non-anomalous global symmetries within the Standard Model of particle physics. Specifically, it highlights that the flavor symmetry SU(Nf) in Quantum Chromodynamics (QCD) is free of anomalies. This indicates that certain global symmetries can exist without the complications that arise from anomalies, which are typically present in gauge theories. The conversation suggests a deeper exploration of global symmetries and their implications in theoretical physics.

PREREQUISITES
  • Understanding of Quantum Field Theory (QFT)
  • Familiarity with the Standard Model of particle physics
  • Knowledge of Quantum Chromodynamics (QCD)
  • Concept of anomalies in gauge theories
NEXT STEPS
  • Research the implications of non-anomalous global symmetries in theoretical physics
  • Study the role of SU(Nf) flavor symmetry in QCD
  • Explore the concept of anomalies in gauge theories
  • Investigate other potential global symmetries in the Standard Model
USEFUL FOR

The discussion is beneficial for theoretical physicists, students of Quantum Field Theory, and researchers interested in the properties of symmetries within the Standard Model.

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My QFT class has been discussing anomalies in the Standard Model. I'm starting to wonder... are there any global symmetries that DON'T have anomalies?
 
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In QCD flavor symmetry SU(Nf)is free of anomalies.
 

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