简明量子场论 第2版 英文pdf电子书版本下载

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Part Ⅰ：Motivation and Foundation 3

Ⅰ.1 Who Needs It? 3

Ⅰ.2 Path Integral Formulation of Quantum Physics 7

Ⅰ.3 From Mattress to Field 17

Ⅰ.4 From Field to Particle to Force 26

Ⅰ.5 Coulomb and Newton：Repulsion and Attraction 32

Ⅰ.6 Inverse Square Law and the Floating 3-Brane 40

Ⅰ.7 Feynman Diagrams 43

Ⅰ.8 Quantizing Canonically 61

Ⅰ.9 Disturbing the Vacuum 70

Ⅰ.10 Symmetry 76

Ⅰ.11 Field Theory in Curved Spacetime 81

Ⅰ.12 Field Theory Redux 88

Part Ⅱ：Dirac and the Spinor 93

Ⅱ.1 The Dirac Equation 93

Ⅱ.2 Quantizing the Dirac Field 107

Ⅱ.3 Lorentz Group and Weyl Spinors 114

Ⅱ.4 Spin-Statistics Connection 120

Ⅱ.5 Vacuum Energy,Grassmann Integrals,and Feynman Diagrams for Fermions 123

Ⅱ.6 Electron Scattering and Gauge Invariance 132

Ⅱ.7 Diagrammatic Proof of Gauge Invariance 144

Ⅱ.8 Photon-Electron Scattering and Crossing 152

Part Ⅲ：Renormalization and Gauge Invariance 161

Ⅲ.1 Cutting Off Our Ignorance 161

Ⅲ.2 Renormalizable versus Nonrenormalizable 169

Ⅲ.3 Counterterms and Physical Perturbation Theory 173

Ⅲ.4 Gauge Invariance：A Photon Can Find No Rest 182

Ⅲ.5 Field Theory without Relativity 190

Ⅲ.6 The Magnetic Moment of the Electron 194

Ⅲ.7 Polarizing the Vacuum and Renormalizing the Charge 200

Ⅲ.8 Becoming Imaginary and Conserving Probability 207

Part Ⅳ：Symmetry and Symmetry Breaking 223

Ⅳ.1 Symmetry Breaking 223

Ⅳ.2 The Pion as a Nambu-Goldstone Boson 231

Ⅳ.3 Effective Potential 237

Ⅳ.4 Magnetic Monopole 245

Ⅳ.5 Nonabelian Gauge Theory 253

Ⅳ.6 The Anderson-Higgs Mechanism 263

Ⅳ.7 Chiral Anomaly 270

Part Ⅴ：Field Theory and Collective Phenomena 283

Ⅴ.1 Superfluids 283

Ⅴ.2 Euclid,Boltzmann,Hawking,and Field Theory at Finite Temperature 287

Ⅴ.3 Landau-Ginzburg Theory of Critical Phenomena 292

Ⅴ.4 Superconductivity 295

Ⅴ.5 Peierls Instability 298

Ⅴ.6 Solitons 302

Ⅴ.7 Vortices,Monopoles,and Instantons 306

Part Ⅵ： Field Theory and Condensed Matter 315

Ⅵ.1 Fractional Statistics,Chern-Simons Term,and Topological Field Theory 315

Ⅵ.2 Quantum Hall Fluids 322

Ⅵ.3 Duality 331

Ⅵ.4 The σ Models as Effective Field Theories 340

Ⅵ.5 Ferromagnets and Antiferromagnets 344

Ⅵ.6 Surface Growth and Field Theory 347

Ⅵ.7 Disorder：Replicas and Grassmannian Symmetry 350

Ⅵ.8 Renormalization Group Flow as a Natural Concept in High Energy and Condensed Matter Physics 356

Part Ⅶ：Grand Unification 371

Ⅶ.1 Quantizing Yang-Mills Theory and Lattice Gauge Theory 371

Ⅶ.2 Electroweak Unification 379

Ⅶ.3 Quantum Chromodynamics 385

Ⅶ.4 Large N Expansion 394

Ⅶ.5 Grand Unification 407

Ⅶ.6 Protons Are Not Forever 413

Ⅶ.7 SO(10)Unifcation 421

Part Ⅷ：Gravity and Beyond 433

Ⅷ.1 Gravity as a Field Theory and the Kaluza-Klein Picture 433

Ⅷ.2 The Cosmological Constant Problem and the Cosmic Coincidence Problems 448

Ⅷ.3 Effective Field Theory Approach to Understanding Nature 452

Ⅷ.4 Supersymmetry：A Very Brief Introduction 461

Ⅷ.5 A Glimpse of String Theory as a 2-Dimensional Field Theory 469

Closing Words 473

Part N 479

N.1 Gravitational Waves and Effective Field Theory 479

N.2 Gluon Scattering in Pure Yang-Mills Theory 483

N.3 Subterranean Connections in Gauge Theories 497

N.4 Is Einstein Gravity Secretly the Square of Yang-Mills Theory? 513

More Closing Words 521

Appendix A：Gaussian Integration and the Central Identity of Quantum Field Theory 523

Appendix B：A Brief Review of Group Theory 525

Appendix C：Feynman Rules 534

Appendix D：Various Identities and Feynman Integrals 538

Appendix E：Dotted and Undotted Indices and the Majorana Spinor 541

Solutions to Selected Exercises 545

Further Reading 559

Index 563