Table of contents : Prefaces......Page v CONTENTS......Page x 1. The Need for a Quantum Theory......Page p1 2. The Polarization of Photons......Page p4 3. Interference of Photons......Page p7 4. Superposition and Indeterminacy......Page p10 5. Mathematical Formulation of the Principle......Page p14 6. Bra and Ket Vectors......Page p18 7. Linear Operators......Page p23 8. Conjugate Relations......Page p26 9. Eigenvalues and Eigenvectors......Page p29 10. Observables......Page p34 11. Functions of Observables......Page p41 12. The General Physical Interpretation......Page p45 13. Commutability and Compatibility......Page p49 14. Basis Vectors......Page p53 15. The 8 Function......Page p58 16. Properties of the Basic Vectors......Page p62 17. Representation of Linear Operators......Page p67 18. Probability Amplitudes......Page p72 19. Theorems about Functions of Observables......Page p76 20. Developments in Notation......Page p79 21. Poisson Brackets......Page p84 22. Schrodinger's Representation......Page p89 23. The Momentum Representation......Page p94 24. Heisenberg's Principle of Uncertainty......Page p97 25. Displacement Operators......Page p99 26. Unitary Transformations......Page p103 27. Schrodinger's Form for Eqns of Motion......Page p108 28. Heisenberg's Form for Equations of Motion......Page p111 29. Stationary States......Page p116 30. The Free Particle......Page p118 31. The Motion of Wave Packets......Page p121 32. The Action Principle......Page p125 33. The Gibbs Ensemble......Page p130 34. The Harmonic Oscillator......Page p136 35. Angular Momentum......Page p140 36. Properties of Angular Momentum......Page p144 37. The Spin of the Electron......Page p149 38. Motion in a Central Field of Force......Page p152 39. Energy-levels of the Hydrogen Atom......Page p156 40. Selection Rules......Page p159 41. The Zeeman Effect for the Hydrogen Atom......Page p165 42. General Remarks......Page p167 43. Change in Energy Levels caused by a Perturbation......Page p168 44. The Perturbation as causing Transitions......Page p172 45. Application to Radiation......Page p175 46. Transitions caused by a Time-Indep. Perturbation......Page p178 47. The Anomalous Zeeman Effect......Page p181 48. General Remarks......Page p185 49. The Scattering Coefficient......Page p188 50. Solution with the Momentum Representation......Page p193 51. Dispersive Scattering......Page p199 52. Resonance Scattering......Page p201 53. Emission and Absorption......Page p204 54. Symmetrical and Antisymmetrical States......Page p207 55. Permutations as Dynamical Variables......Page p211 56. Permutations as Constants of the Motion......Page p213 57. Determination of the Energy-levels......Page p216 58. Application to Electrons......Page p219 59. An Assembly of Bosons......Page p225 60. The Connexion between Bosons and Oscillators......Page p227 61. Emission and Absorption of Bosons......Page p232 62. Application to Photons......Page p235 63. Interaction Energy between Photons & an Atom......Page p239 64. Emission, Absorption, and Scattering of Radiation......Page p244 65. An Assembly of Fermions......Page p248 66. Relativistic Treatment of a Particle......Page p253 67. The Wave Equation for the Electron......Page p254 68. Invariance under a Lorentz Transformation......Page p258 69. The Motion of a Free Electron......Page p261 70. Existence of the Spin......Page p263 71. Transition to Polar Variables......Page p267 72. Fine-structure of Energy-levels of Hydrogen......Page p269 73. Theory of the Positron......Page p273 74. The E-M Field in the Absence of Matter......Page p276 75. Relativistic Form of the Quantum Conditions......Page p280 76. The Dynamical Variables at one Time......Page p283 77. The Supplementary Conditions......Page p287 78. Electrons and Positrons by Themselves......Page p292 79. The Interaction......Page p298 80. The Physical Variables......Page p302 81. Interpretation......Page p306 82. Applications......Page p310 INDEX......Page p313