简明量子场论 第2版 英文【2025|PDF下载-Epub版本|mobi电子书|kindle百度云盘下载】

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Part Ⅰ：Motivation and Foundation3

Ⅰ.1 Who Needs It?3

Ⅰ.2 Path Integral Formulation of Quantum Physics7

Ⅰ.3 From Mattress to Field17

Ⅰ.4 From Field to Particle to Force26

Ⅰ.5 Coulomb and Newton：Repulsion and Attraction32

Ⅰ.6 Inverse Square Law and the Floating 3-Brane40

Ⅰ.7 Feynman Diagrams43

Ⅰ.8 Quantizing Canonically61

Ⅰ.9 Disturbing the Vacuum70

Ⅰ.10 Symmetry76

Ⅰ.11 Field Theory in Curved Spacetime81

Ⅰ.12 Field Theory Redux88

Part Ⅱ：Dirac and the Spinor93

Ⅱ.1 The Dirac Equation93

Ⅱ.2 Quantizing the Dirac Field107

Ⅱ.3 Lorentz Group and Weyl Spinors114

Ⅱ.4 Spin-Statistics Connection120

Ⅱ.5 Vacuum Energy,Grassmann Integrals,and Feynman Diagrams for Fermions123

Ⅱ.6 Electron Scattering and Gauge Invariance132

Ⅱ.7 Diagrammatic Proof of Gauge Invariance144

Ⅱ.8 Photon-Electron Scattering and Crossing152

Part Ⅲ：Renormalization and Gauge Invariance161

Ⅲ.1 Cutting Off Our Ignorance161

Ⅲ.2 Renormalizable versus Nonrenormalizable169

Ⅲ.3 Counterterms and Physical Perturbation Theory173

Ⅲ.4 Gauge Invariance：A Photon Can Find No Rest182

Ⅲ.5 Field Theory without Relativity190

Ⅲ.6 The Magnetic Moment of the Electron194

Ⅲ.7 Polarizing the Vacuum and Renormalizing the Charge200

Ⅲ.8 Becoming Imaginary and Conserving Probability207

Part Ⅳ：Symmetry and Symmetry Breaking223

Ⅳ.1 Symmetry Breaking223

Ⅳ.2 The Pion as a Nambu-Goldstone Boson231

Ⅳ.3 Effective Potential237

Ⅳ.4 Magnetic Monopole245

Ⅳ.5 Nonabelian Gauge Theory253

Ⅳ.6 The Anderson-Higgs Mechanism263

Ⅳ.7 Chiral Anomaly270

Part Ⅴ：Field Theory and Collective Phenomena283

Ⅴ.1 Superfluids283

Ⅴ.2 Euclid,Boltzmann,Hawking,and Field Theory at Finite Temperature287

Ⅴ.3 Landau-Ginzburg Theory of Critical Phenomena292

Ⅴ.4 Superconductivity295

Ⅴ.5 Peierls Instability298

Ⅴ.6 Solitons302

Ⅴ.7 Vortices,Monopoles,and Instantons306

Part Ⅵ： Field Theory and Condensed Matter315

Ⅵ.1 Fractional Statistics,Chern-Simons Term,and Topological Field Theory315

Ⅵ.2 Quantum Hall Fluids322

Ⅵ.3 Duality331

Ⅵ.4 The σ Models as Effective Field Theories340

Ⅵ.5 Ferromagnets and Antiferromagnets344

Ⅵ.6 Surface Growth and Field Theory347

Ⅵ.7 Disorder：Replicas and Grassmannian Symmetry350

Ⅵ.8 Renormalization Group Flow as a Natural Concept in High Energy and Condensed Matter Physics356

Part Ⅶ：Grand Unification371

Ⅶ.1 Quantizing Yang-Mills Theory and Lattice Gauge Theory371

Ⅶ.2 Electroweak Unification379

Ⅶ.3 Quantum Chromodynamics385

Ⅶ.4 Large N Expansion394

Ⅶ.5 Grand Unification407

Ⅶ.6 Protons Are Not Forever413

Ⅶ.7 SO(10)Unifcation421

Part Ⅷ：Gravity and Beyond433

Ⅷ.1 Gravity as a Field Theory and the Kaluza-Klein Picture433

Ⅷ.2 The Cosmological Constant Problem and the Cosmic Coincidence Problems448

Ⅷ.3 Effective Field Theory Approach to Understanding Nature452

Ⅷ.4 Supersymmetry：A Very Brief Introduction461

Ⅷ.5 A Glimpse of String Theory as a 2-Dimensional Field Theory469

Closing Words473

Part N479

N.1 Gravitational Waves and Effective Field Theory479

N.2 Gluon Scattering in Pure Yang-Mills Theory483

N.3 Subterranean Connections in Gauge Theories497

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

More Closing Words521

Appendix A：Gaussian Integration and the Central Identity of Quantum Field Theory523

Appendix B：A Brief Review of Group Theory525

Appendix C：Feynman Rules534

Appendix D：Various Identities and Feynman Integrals538

Appendix E：Dotted and Undotted Indices and the Majorana Spinor541

Solutions to Selected Exercises545

Further Reading559

Index563