Intro -- Contents -- Preface -- Commentary -- Photographs -- Articles -- List of Papers -- Index of Names in the Commentary -- Articles -- [45a] A Generalization of the Quasi-Chemical Method in the Statistical Theory of Superlattices -- C. N. Yang Commentary -- 1. INTRODUCTION -- 2. REFORMULATION OF THE QUASI-CHEMICAL METHOD -- 3. GENERALIZATION TO GROUPS OF FOUR SITES -- 4. GENERAL FORM OF THE QUASX-CHEMICAL METHOD -- 5. COMPARISON WITH BETHE'S METHOD -- 6 . THE NON-INTERFERENCE OF LOCAL CONFIGURATIONS -- 7. SPECIAL CONSIDERATIONS CONCERNING BETHE'S FIRST AND SECOND APPROXIMATIONS -- The First Approximation -- The Second Approximation -- 8. APPLICATION TO THE CRYSTAL Cudu -- [48a] On the Angular Distribution in Nuclear Reactions and Coincidence Measurements -- C. N. Yang Commentary -- INTRODUCTION -- NUCLEAR REACTION -- RELATMSTIC CASE -- -NEUTRINO CORRELATION -- AND CORRELATIONS -- REMARKS ABOUT OTHER PARTICLES -- [49a] Interaction of Mesons with Nucleons and Light Particles -- T. D. Lee, M. Rosenbluth, and C. N. Yang Commentary -- [49b] Are Mesons Elementary Particles? -- E. Fermi and C. N. Yang Commentary -- I. INTRODUCTION -- II. MESONS AS BOUND STATES OF A NUCLEON AND AN ANTI-NUCLZON -- 111. RELATIONSHIPS WITH THE YUKAWA THEORY -- [50a] Selection Rules for the Dematerialization of a Particle into Two Photons -- C. N. Yang Commentary -- I. INTRODUCTION -- II. BEHAVIOR OF THE STATE OF TWO PHOTONS UNDER ROTATION AND INVERSION -- III. SELECTION RULES -- IV. SPACE ROTATION AND INVERSION IN QUANTUM ELECTRODYNAMICS -- V. PARITY OF MESONS AND THE POSITRONIUM -- [50c] Reflection Properties of Spin 1/2 Fields and a Universal Fermi-Type Interaction -- C. N. Yang and J. Tiomno Commentary -- I. INTRODUCTION -- II. GENERAL THEORY -- III. APPLICATIONS TO ELECTRON AND MESON FLELDS -- IV. A UNIVERSAL FERMI-TYPE INTERACTION -- A. The Universal Interaction.

B. Restrictions on the Assignments of Spin 4 Fields to the Different Types -- C. Results -- [50d] The S-Matrix in the Heiscnberg Representation -- C. N. Yang and David Feldman Commentary -- INTRODUCTION -- I. DEFINITION OF THE SMATRIX -- A. Quantum Electrodynamics -- B. The Electromagnetic Properties of Charged Mesons in the @-Formalism -- II. IDENTIFICATION OF THE S-MATRIX -- A. Quantum Electrodynamics -- B. Neutral Vector Mesons with Vector Coupling -- C. Pseudoscalar Mesons with Pseudovector Coupling -- [52a] The Spontaneous Magnetization of a Two-Dimensional Ising Model -- C. N. Yang Commentary -- I. SPONTANEOUS MAGNETIZATION -- II. REDUCTION TO EIGENVALUE PROBLEM -- III. LIMIT FOR INFINITE CRYSTAL -- IV. ELLIPTIC TRANSFORMATION -- V. SOLUTION OF INTEGRAL EQUATION (84) -- [52b] Statistical Theory of Equations of State and Phase Transitions. I. Theory of Condensation -- C. N. Yang and T. D. Lee Commentary -- I. INTRODUCTION -- II. INTERACTION -- III. THE LIMIT OF INFINITE VOLUME -- IV. PHASE TRANSITIONS -- V. COMPARISON WITH MAYER'S THEORY -- APPENDIX I -- APPENDIX II -- APPENDIX III -- [52c] Statistical Theory of Equations of State and Phase Transitions. 11. Lattice Gas and Ising Model -- T. D. Lee and C. N. Yang Commentary -- INTRODUCTION -- II. ISING MODEL AND LATTICE GAS -- III. AN EXAMPLE OF A TWO-DIMENSIONAL LATTICE GAS -- IV. A THEOREM ON THE DISTRIBUTION OF ROOTS OF THE GRAND PARTITION FUNCTION -- V. DISTRIBUTION OF ROOTS ON THE UNIT CIRCLE -- A. Distribution Function g() -- B. An Electrostatic Analog -- C. Relationship between the Cluster Integrals and g() -- D. g() and the Analytical Behavior of the Specific Volume -- E. Example of One- and Two-Dimensional Ferromagnetic Ising Model -- VI. CONCLUDING REMARKS -- APPENDIX I. ONE-DIMENSIONAL HARD RODS AND LATTICE GAS -- APPENDIX II. PROOF OF THEOREM 3.

[52d] Letter to E. Fermi dated May 5, 1952 -- C. N. Yang Commentary -- [54a] Polarization of Nucleons Elastically Scattered from Nuclei -- G. A. Snow, R. M. Sternheimer, and C. N. Yang Commentary -- [54b] Isotopic Spin Conservation and a Generalized Gauge Invariance -- C. N. Yang and R. Mills Commentary -- [54c] Conservation of Isotopic Spin and Isotopic Gauge Invariance -- C. N. Yang and R. L. Mills Commentary -- INTRODUCTION -- ISOTOPIC GAUGE TRANSFORMATION -- FIELD EQUATIONS -- QUANTIZATION -- PROPERTIES OF THE b QUANTA -- [55b] Conservation of Heavy Particles and Generalized Gauge Transformations -- T. D. Lee and C. N. Yang Commentary -- [56d] Charge Conjugation, a New Quantum Number G, and Selection Rules Concerning a Nucleon-Antinucleon System -- T. D. Lee and C. N. Yang Commentary -- [56e] Introductory Talk at the 1956 Rochester Conference, Session on Theoretical Interpretation of New Particles -- C. N. Yang Commentary -- [56h] Question of Parity Conservation in Weak Interactions -- T. D. Lee and C. N. Yang Commentary -- PRESENT EXPERIMENTAL. LIMIT ON PARITY NONCONSERVATION -- QUESTION OF PARITY CONSERVATION IN DECAY -- POSSIBLE EXPERIMENTAL TESTS OF PARITY CONSERVATION IN DECAYS -- QWSTION OF PARITY CONSERVATION IN MESON AND HYPERON DECAYS -- POSSIBLE EXPERIMENTAL TESTS OF PARITY CONSERVATION IN MESON AND HYPERON DECAYS -- REMARKS -- APPENDIX -- [57d] Present Knowledge About the New Particles -- C. N. Yang Commentary -- [57e] Remarks on Possible Noninvariance Under Time Reversal and Charge Conjugation -- T. D. Lee, Reinhard Oehme, and C. N. Yang Commentary -- 1. CPT THEOREM -- 2. LIFETIME OF CHARGE CONJUGATE PARTICLES AGAINST WEAK DECAY -- 3. DEPENDENCE OF INTERFERENCE EFFECTS ON CONSERVATION OF C AND T -- 4. K, K DECAY MODES -- APPENDIX -- [57f] Parity Nonconservation and a Two-Component Theory of the Neutrino.

T. D. Lee and C . N. Yang Commentary -- I. NEUTRINO FIELD -- II. EXPERIMENTAL IMPLICATIONS -- GENERAL REMARKS -- [57h] Many-Body Problem in Quantum Mechanics and Quantum Statistical Mechanics -- T. D. Lee and C. N. Yang Commentary -- [57i] Eigenvalues and Eigenfunctions of a Bose System of Hard Spheres and Its Low-Temperature Properties -- T. D. Lee, Kerson Huang, and C. N. Yang Commentary -- 1. GROUND STATE ENERGY -- 2. ENERGY LEVELS NEAR THE GROUND STATE -- PHONON SPECTRUM -- 3. WAVE FUNCTIONS AND THE PAIR DISTRIBUTION FUNCTION -- 4. CRITICAL DISCUSSION OF THE VALIDITY OF THE PSEUDOPOTENTIAL METHOD FOR THE PRESENT PROBLEM -- 5. "TWO-FLUID MODEL" AND THE LOW- TEMPERATURE PROPERTIES OF THE HARD-SPHERE SYSTEM -- 6. MOMENTUM SPACE ORDER, CORRELATION LENGTH, AND SUPERFLUID FLOW -- APPENDIX I -- APPENDIX II -- [57o] General Partial Wave Analysis of the Decay of a Hyperon of Spin 1/2 -- T. D. Lee and C. N. Yang Commentary -- [57q] Quantum Mechanical Many-Body Problem and the Low Temperature Properties of a Bose System of Hard Spheres -- Kerson Huang, T. D. Lee, and C. N. Yang commentary -- 1. Binary collision expansion method -- 2. Application -- 3 . Pseudopotential method -- 4. Further remarks -- Notes and references -- [57s] The Law of Parity Conservation and Other Symmetry Laws of Physics -- C. N. Yang Commentary -- REFERENCES. -- [57t] Speech at the Nobel Banquet, December 10, 1957 -- C. N. Yang Commentary -- [58a] Possible Determination of the Spin of Ao from Its Large Decay Angular Asymmetry -- T. D. Lee and C. N. Yang Commentary -- APPENDIX -- [58d] Low-Temperature Behavior of a Dilure Bose System of Hard Spheres. I. Equilibrium Properties -- T. D. Lee and C. N. Yang Commentary -- 1. INTRODUCTION -- 2. REVIEW -- 3. MACROSCOPIC BUT INCOMPLETE OCCUPATION OF THE FREE-PARTICLE GROUND STATE -- 4. PARTITION FUNCTION -- 5. GASEOUS PHASE.

6. DEGENERATE PHASE -- 7. PHASE TRANSITION -- 8. COMPARISON WITH BINARY COLLISION METHOD -- 9. DISCUSSIONS -- ACKNOWLEDGMENT -- APPENDIX -- [59b] Many-Body Problem in Quantum Statistical Mechanics. I. General Formulation -- T. D. Lee and C. N. Yang Commentary -- 1. INTRODUCTION -- 2. SOME DEFINITIONS -- A. Boltzmann Statistics -- B. Bose-Einstein (i.e., Symmetrical) Statistics -- C. Fermi-Dirac (i.e., Antisymmetrical) Statistics -- 3. UNS AND UNA IN TERMS OF UN -- 4. U1 IN TERMS OF THE BINARY KERNEL -- 5. THE LIMIT . MOMENTUM REPRESENTATION -- 6. BINARY KERNEL B FOR HARD- SPHERE INTERACTION -- ACKNOmEDGMENT -- APPENDIX A -- APPENDIX B -- APPENDIX C -- APPENDIX D -- APPENDIX E -- [59c] Symmetry Principles in Modern Physics -- C. N. Yang Commentary -- [60d] Theoretical Discussions on Possible High-Energy Neutrino Experiments -- T. D. Lee and C. N. Yang Commentary -- [60e] Implications of the Intermediate Boson Basis of the Weak Interactions: Existence of a Quartet of Intermediate Bosons and Their Dual Isotopic Spin Transformation Properties -- T. D. Lee and C. N. Yang Commentary -- I. INTRODUCTION -- II. SOME PROPERTIES OF W -- III. CONSEQUENCES OF PROPOSITIONS (i) AND (ii) -- IV. A SIMPLE MODEL -- V. A SIMPLE MODEL (CONTINUED) -- VI. THE W PARTICLES AS SCHIZONS -- VII. REMARKS -- VIII. LEPTON COUPLINGS OF Wo -- IX. DECAY OF THE W PARTICLES -- X. "APPARENT" NONCONSERVATION OF STRANGENESS -- XI. NEUTRINO CAPTURE EXPERIMENTS -- XII. CONCLUDING REMARKS -- APPENDIX -- [60g] Imperfect Bose System -- C. N. Yang Commentary -- Discussion remark by C . Domb -- Answer by C . N . Yang -- REFERENCES -- [61a] Introductory Notes to the Article "Are Mesons Elementary Particles?" -- C. N. Yang Commentary -- [61b] Some Considerations on Global Symmetry -- T. D. Lee and C. N. Yang Commentary -- 1. INTRODUCTION -- 2. REQUIREMENTS ON THE GLOBAL SYMMETRY GROUP.

3. THE GROUP.

A remarkable personal and professional chronicle by one of today's leading physicists, this is a collection of Chen Ning Yang's personally selected papers supplemented by his insightful commentaries. Including previously unpublished or hard-to-find works, this volume contains Yang's important papers on statistical physics, nuclear forces, and particle physics. Among them are his seminal work with T D Lee on the nonconservation of parity, for which they won the Nobel Prize, and his work with R L Mills, which led to modern gauge theories with their exciting prospects for the broad unification of field theories. The commentaries were written especially for this volume and provide a fascinating account of Yang's development as a physicist as well as a look at many important physicists of the 20th century. They trace the development of Yang's interests and ideas from his graduate school days to the present, showing how he worked with his colleagues and how their physics came into being. Together, the papers and commentaries in this unique collection comprise a powerful personal statement, shedding light on both the intellectual development of a great physicist and on the nature of scientific inquiry.

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Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2018. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.