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Klappentext This is a systemic presentation of quantum field theory from first principles, emphasizing both theoretical concepts and experimental applications. Zusammenfassung This is a systematic presentation of quantum field theory from first principles! emphasizing both theoretical concepts and experimental applications. Starting from introductory quantum and classical mechanics! this book develops the quantum field theories that make up the 'Standard Model' of elementary processes. Exercises are included for each chapter! and several appendices complement the text. Inhaltsverzeichnis Part I. Scalar Fields: 1. Classical fields and symmetries; 2. Canonical quantization; 3. Path integrals, perturbation theory and Feynman rules; 4. Scattering and cross sections for scalar fields; Part II. Fields with Spin: 5. Spinors, vectors and gauge invariance; 6. Spin and canonical quantization; 7. Path integrals for fermions and gauge fields; 8. Gauge theories at lowest order; Part III. Renormalization: 9. Loops, regularization and unitarity; 10. Introduction to renormalization; 11. Renormalization and unitarity of gauge theories; Part IV. The Nature of Perturbative Cross Sections: 12. Perturbative corrections and the infrared problem; 13. Analytic structure and infrared finiteness; 14. Factorization and evolution in high energy scattering; 15. Epilogue: bound states and the limitations of perturbation theory; Appendices; References; Index.