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May 6, 2026The European Physical Journal COpen Access

Strong CP and the QCD axion lecture notes via effective field theory

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Authors

FSFrancesco Sannino

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Overview

Lecture notes discuss effective field theory insights on strong CP and QCD axion physics, highlighting the Peccei-Quinn mechanism.

Key Points

  • This work aims to provide a comprehensive introduction to the strong CP problem and QCD axion physics through effective field theory.
  • Review of chiral effective field theory (EFT) of QCD
  • Analysis of theta-dependent potential and related structures
  • Extraction of CP-odd mesonic and baryonic amplitudes
  • Discussion of the Veneziano–Yankielowicz effective Lagrangian in N=1 supersymmetric Yang-Mills theory
  • Comparison with no strong CP claim in the context of EFT.
  • Establishment of a theta-dependent potential from chiral EFT
  • Clarification of the role of topological susceptibility in hadronic observables
  • Demonstration of the Peccei-Quinn mechanism and its implications
  • Insights into axion potential and mass derived from the effective framework

Cite This Study

Francesco Sannino (2026) studied this question.

synapsesocial.com/papers/69fa983604f884e66b5320b1https://doi.org/10.1140/epjc/s10052-026-15612-4
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