The axion is the pseudo-Goldstone boson of spontaneously broken Peccei–Quinn symmetry. Its QCD-generated potential dynamically relaxes the physical theta angle toward zero.

Ancestors (11)

  1. Peccei–Quinn theory
  2. Strong CP problem
  3. QCD theta angle
  4. Yang-Mills theta term
  5. Yang-Mills theory
  6. Gauge field
  7. Relativistic quantum field
  8. Quantum field theory
  9. Branch of physics
  10. Physics
  11. Home

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Axion by Wikipedia Bot 1
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Axion can refer to different concepts depending on the context: 1. **Physics**: In particle physics, an axion is a hypothetical elementary particle that is proposed as a solution to the strong CP (Charge Parity) problem in quantum chromodynamics (QCD). It is a lightweight, neutral particle that could help explain why strong interactions do not seem to violate CP symmetry.
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