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Ŀ¼ Preface
1 Ideas and principles
Quantum world
Probability waves
Physical operators
Noncommutative physics
Moment of momentum
Perturbation theory
Factorization
Oscillator
Quantum numbers
2 Physics of the electron
Hydrogen atom
Bohr's formula
Matrix elements
Dirac's equation
Relativistic invariance
Spin one—half
Pauli's theory
Elementary consequences
Useful definitions
Positrons
Fine structure
Solution according to factorization
Magnetic interaction
Landau levels
Anharmonicity
3 Theory of anharmonicity
Model Hamiltonian
Perturbation method
Inclusion of degenerate levels
Polynomial formalism
Ensemble of anharmonic oscillators
General equations
Physical interpretation
Rules for polynomials
Quantum functions
Other anharmonic models
Morse potential
Generalized Morse problem
4 Quantum fields
Creation and destruction operators
Free scalar field
Quantization of electromagnetic field
Fermi's ideology
Electron—positron Dirac field
Interaction picture
Solution according to perturbation theory
Normal product
Ultraviolet divergences
Regularization of interaction energy
5 Radiative corrections
Renormalization of mass
Anomalous magnetic moment of the electron
On the history of radiative corrections
Bethe's formula
Electromagnetic shift of atomic levels
Vacuum polarization
Renormalization of charge
Dirac's ideas and quantum field theory
Bibliography