What is the Model Independent Expectation Value for QCD Vacuum?

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SUMMARY

The discussion centers on the model independent expectation value for Quantum Chromodynamics (QCD) vacuum. Key literature includes the paper by Peccei, which addresses the strong CP problem related to QCD vacuum structure, and Weinberg's "Quantum Field Theory, Volume 2" as a recommended resource. The QCD vacuum is crucial for understanding particle physics and its implications in theoretical frameworks.

PREREQUISITES
  • Understanding of Quantum Chromodynamics (QCD)
  • Familiarity with the strong CP problem
  • Knowledge of axion theory and its significance
  • Basic concepts in Quantum Field Theory (QFT)
NEXT STEPS
  • Read the paper on QCD vacuum at arxiv.org
  • Study Peccei's contributions to axion theory
  • Explore Weinberg's "Quantum Field Theory, Volume 2" for deeper insights
  • Investigate the implications of the strong CP problem in particle physics
USEFUL FOR

This discussion is beneficial for theoretical physicists, graduate students in particle physics, and researchers interested in Quantum Chromodynamics and its implications in modern physics.

Naeem Anwar
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How to understand QCD vacuum? What is the model independent expectation value for it? Looking for some basic literature on it.

Thanks in advance!
 
The question is a bit vague to me, but for example a place where a discussion on the QCD vacuum can be found is:

http://arxiv.org/pdf/hep-ph/0607268.pdf

Peccei was one of the "inventors" of the Axion in order to provide a solution of the so called strong CP problem, which arises precisely due to the structure of the QCD vacuum.

I hope this helps

Sleuth
 
you could also try Weinberg's QFT vol 2
 

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