This book presents the essential aspects of relativistic quantum field theory, with minimal use of mathematics. It covers the development of quantum field theory from the original quantization of electromagnetic field to the gauge field theory of interactions among quarks and leptons.Aimed at both scientists and non-specialists, it requires only some rudimentary knowledge of the Lagrangian and Hamiltonian formulation of Newtonian mechanics and a basic understanding of the special theory of relativity and quantum mechanics

Table of Contents

1. Particles and Fields I: Dichotomy

2. Lagrangian and Hamiltonian Dynamics

3. Canonical Quantization

4. Particles and Fields II: Duality

5. Equations for Duality

6. Electromagnetic Field

7. Emulation of Light I: Matter Fields

8. Road Map for Field Quantization

9. Particles and Fields Ill: Particles as Quanta of Fields

10. Emulation of Light II: Interactions

11. Triumph and Wane

12. Emulation of Light 111: Gauge Field

13. Quarks and Leptons

14. Non-Abelian Gauge Field Theories

Epilogue: Leaps of Faith

Appendix 1: The Natural Unit System

Appendix 2: Notation

Appendix 3: Velocity-Dependent Potential

Appendix 4: Fourier Decomposition of Field

Appendix 5: Evolution of Color Charges