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Preface | xi | |
1 | Stern-Gerlach Experiments | 1 |
1.1 | The Original Stern-Gerlach Experiment | 1 |
1.2 | Four Experiments | 5 |
1.3 | The Quantum State Vector | 9 |
1.4 | Analysis of Experiment 3 | 13 |
1.5 | Experiment 5 | 15 |
1.6 | Summary | 18 |
2 | Rotation of Basis States and Matrix Mechanics | 24 |
2.1 | The Beginnings of Matrix Mechanics | 24 |
2.2 | Rotation Operators | 28 |
2.3 | The Identity and Projection Operators | 36 |
2.4 | Matrix Representations of Operators | 41 |
2.5 | Changing Representations | 45 |
2.6 | Expectation Values | 50 |
2.7 | Photon Polarization and the Spin of the Photon | 51 |
2.8 | Summary | 56 |
3 | Angular Momentum | 64 |
3.1 | Rotations Do Not Commute and Neither Do the Generators | 64 |
3.2 | Commuting Operators | 69 |
3.3 | The Eigenvalues and Eigenstates of Angular Momentum | 70 |
3.4 | The Matrix Elements of the Raising and Lowering Operators | 77 |
3.5 | Uncertainty Relations and Angular Momentum | 78 |
3.6 | The Spin-1/2 Eigenvalue Problem | 80 |
3.7 | A Stern-Gerlach Experiment with Spin-1 Particles | 85 |
3.8 | Summary | 88 |
4 | Time Evolution | 93 |
4.1 | The Hamiltonian and the Schrodinger Equation | 93 |
4.2 | Time Dependence of Expectation Values | 96 |
4.3 | Precession of a Spin-1/2 Particle in a Magnetic Field | 97 |
4.4 | Magnetic Resonance | 104 |
4.5 | The Ammonia Molecule and the Ammonia Maser | 108 |
4.6 | The Energy-Time Uncertainty Relation | 115 |
4.7 | Summary | 116 |
5 | A System of Two Spin-1/2 Particles | 120 |
5.1 | The Basis States for a System of Two Spin-1/2 Particles | 120 |
5.2 | The Hyperfine Splitting of the Ground State of Hydrogen | 122 |
5.3 | The Addition of Angular Momenta for Two Spin-1/2 Particles | 126 |
5.4 | The Einstein-Podolsky-Rosen Paradox | 131 |
5.5 | A Nonquantum Model and the Bell Inequalities | 134 |
5.6 | Summary | 143 |
6 | Wave Mechanics in One Dimension | 147 |
6.1 | Position Eigenstates and the Wave Function | 147 |
6.2 | The Translation Operator | 151 |
6.3 | The Generator of Translations | 153 |
6.4 | The Momentum Operator in the Position Basis | 156 |
6.5 | Momentum Space | 158 |
6.6 | A Gaussian Wave Packet | 160 |
6.7 | The Heisenberg Uncertainty Principle | 164 |
6.8 | General Properties of Solutions to the Schrodinger Equation in Position Space | 166 |
6.9 | The Particle in a Box | 171 |
6.10 | Scattering in One Dimension | 177 |
6.11 | Summary | 185 |
7 | The One-Dimensional Harmonic Oscillator | 194 |
7.1 | The Importance of the Harmonic Oscillator | 194 |
7.2 | Operator Methods | 196 |
7.3 | An Example: Torsional Oscillations of the Ethylene Molecule | 199 |
7.4 | Matrix Elements of the Raising and Lowering Operators | 201 |
7.5 | Position-Space Wave Functions | 202 |
7.6 | The Zero-Point Energy | 205 |
7.7 | The Classical Limit | 207 |
7.8 | Time Dependence | 208 |
7.9 | Solving the Schrodinger Equation in Position Space | 209 |
7.10 | Inversion Symmetry and the Parity Operator | 212 |
7.11 | Summary | 213 |
8 | Path Integrals | 216 |
8.1 | The Multislit, Multiscreen Experiment | 216 |
8.2 | The Transition Amplitude | 218 |
8.3 | Evaluating the Transition Amplitude for Short Time Intervals | 219 |
8.4 | The Path Integral | 221 |
8.5 | Evaluation of the Path Integral for a Free Particle | 224 |
8.6 | Why Some Particles Follow the Path of Least Action | 226 |
8.7 | Quantum Interference Due to Gravity | 231 |
8.8 | Summary | 233 |
9 | Translational and Rotational Symmetry in the Two-Body Problem | 237 |
9.1 | The Elements of Wave Mechanics in Three Dimensions | 237 |
9.2 | Translational Invariance and Conservation of Linear Momentum | 241 |
9.3 | Relative and Center-of-Mass Coordinates | 244 |
9.4 | Estimating Ground-State Energies Using the Uncertainty Principle | 246 |
9.5 | Rotational Invariance and Conservation of Angular Momentum | 248 |
9.6 | A Complete Set of Commuting Observables | 250 |
9.7 | Vibrations and Rotations of a Diatomic Molecule | 254 |
9.8 | Position-Space Representations of L in Spherical Coordinates | 260 |
9.9 | Orbital Angular Momentum Eigenfunctions | 263 |
9.10 | Summary | 268 |
10 | Bound States of Central Potentials | 274 |
10.1 | The Behavior of the Radial Wave Function Near the Origin | 274 |
10.2 | The Coulomb Potential and the Hydrogen Atom | 277 |
10.3 | The Finite Spherical Well and the Deuteron | 288 |
10.4 | The Infinite Spherical Well | 292 |
10.5 | The Three-Dimensional Isotropic Harmonic Oscillator | 296 |
10.6 | Conclusion | 302 |
11 | Time-Independent Perturbations | 306 |
11.1 | Nondegenerate Perturbation Theory | 306 |
11.2 | An Example Involving the One-Dimensional Harmonic Oscillator | 311 |
11.3 | Degenerate Perturbation Theory | 314 |
11.4 | The Stark Effect in Hydrogen | 316 |
11.5 | The Ammonia Molecule in an External Electric Field Revisited | 319 |
11.6 | Relativistic Perturbations to the Hydrogen Atom | 322 |
11.7 | The Energy Levels of Hydrogen, Including Fine Structure, the Lamb Shift, and Hyperfine Splitting | 331 |
11.8 | The Zeeman Effect in Hydrogen | 334 |
11.9 | Summary | 335 |
12 | Identical Particles | 341 |
12.1 | Indistinguishable Particles in Quantum Mechanics | 341 |
12.2 | The Helium Atom | 345 |
12.3 | Multielectron Atoms and the Periodic Table | 355 |
12.4 | Covalent Bonding | 360 |
12.5 | Conclusion | 366 |
13 | Scattering | 368 |
13.1 | The Asymptotic Wave Function and the Differential Cross Section | 368 |
13.2 | The Born Approximation | 375 |
13.3 | An Example of the Born Approximation: The Yukawa Potential | 379 |
13.4 | The Partial Wave Expansion | 381 |
13.5 | Examples of Phase-Shift Analysis | 385 |
13.6 | Summary | 393 |
14 | Photons and Atoms | 399 |
14.1 | The Aharonov-Bohm Effect | 399 |
14.2 | The Hamiltonian for the Electromagnetic Field | 404 |
14.3 | Quantizing the Radiation Field | 409 |
14.4 | The Properties of Photons | 410 |
14.5 | The Hamiltonian of the Atom and the Electromagnetic Field | 414 |
14.6 | Time-Dependent Perturbation Theory | 417 |
14.7 | Fermi's Golden Rule | 425 |
14.8 | Spontaneous Emission | 430 |
14.9 | Higher-Order Processes and Feynman Diagrams | 437 |
Appendixes | ||
A | Electromagnetic Units | 444 |
B | The Addition of Angular Momenta | 449 |
C | Dirac Delta Functions | 453 |
D | Gaussian Integrals | 457 |
E | The Lagrangian for a Charge q in a Magnetic Field | 460 |
F | Values of Physical Constants | 463 |
G | Answers to Selected Problems | 465 |
Index | 467 |
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Add A Modern Approach to Quantum Mechanics, Inspired by Richard Feynman and J.J. Sakurai, A Modern Approach to Quantum Mechanics lets professors expose their undergraduates to the excitement and insight of Feynman's approach to quantum mechanics while simultaneously giving them a textbook th, A Modern Approach to Quantum Mechanics to the inventory that you are selling on WonderClubX
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Add A Modern Approach to Quantum Mechanics, Inspired by Richard Feynman and J.J. Sakurai, A Modern Approach to Quantum Mechanics lets professors expose their undergraduates to the excitement and insight of Feynman's approach to quantum mechanics while simultaneously giving them a textbook th, A Modern Approach to Quantum Mechanics to your collection on WonderClub |