Foreword to the 2012 Edition by Thomas Appelquist Foreword Notations One. Quanta of a Field as Particles 1. Introduction 2. The Electromagnetic Field 3. Scalar Field with Mass 4. Field of Charged Scalar Particles 5. Particles Obeying the Pauli Principle Two. Interaction of the Fields 6. General Types of Interaction 7. Conservation of Momentum 8. Yukawa Interactions 9. Other Interactions 10. Calculation of Transition Rates 11. Development Parameters Three. The Interaction Constants 12. Electromagnetic and Yukawa Interaction Constants 13. Decay of the Pion as Direct Process 14. The Beta Interaction 15. Spontaneous Decay of the Muon 16. Forced Decay of the Muon Four. Pions, Nucleons, and Anti-nucleons 17. Yukawa Theory of Nuclear Forces 18. Production of Pions in Nucleon Collisions 19. Effect of the Nucleon Bond 20. Production of Pions by Gamma Rays 21. Capture of Negative Pions by Protons 22. Scattering of Pions by Nucleons 23. The Anti-nucleon. Annihilation 24. Decay of the Neutral Pion into Two Photons 25. Statistical Theory of Pion Production 26. Collisions of Extremely High Energy Particles Appendices: 1. Quantization of the Radiation Field 2. Second Quantization with Pauli Principle 3. Measurability of the Fields 4. Relativistic Invariance 5. Relationships between Interaction Constants
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