Introduction to Quantum Field Theory (Hardcover)

Quantum Field Theory provides a theoretical framework for understanding fields and the particles associated with them, and is the basis of particle physics and condensed matter research. This graduate level textbook provides a comprehensive introduction to quantum field theory, giving equal emphasis to operator and path integral formalisms. It covers modern research such as helicity spinors, BCFW construction and generalized unitarity cuts; as well as treating advanced topics including BRST quantization, loop equations, and finite temperature field theory. Various quantum fields are described, including scalar and fermionic fields, Abelian vector fields and Quantum ElectroDynamics (QED), and finally non-Abelian vector fields and Quantum ChromoDynamics (QCD). Applications to scattering cross sections in QED and QCD are also described. Each chapter ends with exercises and an important concepts section, allowing students to identify the key aspects of the chapter and test their understanding.

量子場論提供了一個理論框架，用於理解場和與之相關的粒子，並且是粒子物理學和凝聚態物理研究的基礎。這本研究生級教科書全面介紹了量子場論，同等重視算符和路徑積分形式。它涵蓋了現代研究，如螺旋度旋量、BCFW構造和廣義單位性割；同時還涉及到高級主題，包括BRST量子化、迴圈方程和有限溫度場論。書中描述了各種量子場，包括標量場和費米場、阿貝爾矢量場和量子電動力學（QED），最後是非阿貝爾矢量場和量子色動力學（QCD）。還描述了在QED和QCD中的散射截面應用。每章結束時都有習題和重要概念部分，讓學生能夠確定章節的關鍵方面並測試他們的理解能力。