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Chemistry
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Theoretical Chemistry
1. Foundations of Theoretical Chemistry
2. Quantum Mechanics
3. Electronic Structure Theory
4. Statistical Mechanics and Thermodynamics
5. Computational Chemistry Methods
6. Spectroscopy and Molecular Properties
7. Chemical Bonding and Reactivity
8. Advanced Topics and Applications
Quantum Mechanics
Historical Development
Failures of Classical Physics
Blackbody Radiation Problem
Ultraviolet Catastrophe
Planck's Quantum Hypothesis
Photoelectric Effect
Experimental Observations
Einstein's Photon Theory
Work Function and Threshold Frequency
Atomic Structure
Rutherford Scattering
Bohr Model of Hydrogen
Limitations of Bohr Model
Wave-Particle Duality
de Broglie Hypothesis
Davisson-Germer Experiment
Double-Slit Experiment
Fundamental Postulates
The Wavefunction
Physical Interpretation
Born's Statistical Interpretation
Normalization Condition
Probability Current Density
Operators and Observables
Linear Operators
Hermitian Operators
Eigenvalue Equations
Commutator Relations
Compatible Observables
The Schrödinger Equation
Time-Dependent Form
Time-Independent Form
Continuity Equation
Probability Conservation
Measurement Theory
Eigenvalues as Measurement Outcomes
Expectation Values
Standard Deviation and Uncertainty
Collapse of the Wavefunction
Uncertainty Principle
Heisenberg Uncertainty Relations
Position-Momentum Uncertainty
Energy-Time Uncertainty
Generalized Uncertainty Relations
One-Dimensional Systems
Free Particle
Plane Wave Solutions
Wave Packets
Group and Phase Velocity
Particle in a Box
Infinite Square Well
Energy Eigenvalues
Wavefunctions and Normalization
Finite Square Well
Tunneling Phenomenon
Quantum Harmonic Oscillator
Classical Harmonic Oscillator Review
Schrödinger Equation Solution
Energy Levels and Degeneracy
Ladder Operators
Coherent States
Potential Barriers and Wells
Step Potential
Barrier Penetration
Tunneling Probability
Resonant Tunneling
Three-Dimensional Systems
Particle in a Three-Dimensional Box
Separation of Variables
Energy Levels and Degeneracy
Density of States
Central Force Problems
Separation in Spherical Coordinates
Radial Equation
Angular Momentum Eigenvalue Problem
The Hydrogen Atom
Coulomb Potential
Radial Wavefunctions
Associated Laguerre Polynomials
Quantum Numbers
Energy Levels and Degeneracy
Electron Probability Distributions
Rigid Rotor
Classical Rigid Rotor
Quantum Mechanical Treatment
Rotational Energy Levels
Spherical Harmonics
Angular Momentum
Orbital Angular Momentum
Angular Momentum Operators
Commutation Relations
Eigenvalue Problem
Ladder Operators
Spin Angular Momentum
Spin-1/2 Particles
Pauli Matrices
Spinors
Stern-Gerlach Experiment
Addition of Angular Momenta
Vector Model
Clebsch-Gordan Coefficients
Wigner 3j Symbols
Coupling Schemes
Approximation Methods
Time-Independent Perturbation Theory
Non-Degenerate Perturbation Theory
First-Order Energy Correction
Second-Order Energy Correction
First-Order Wavefunction Correction
Degenerate Perturbation Theory
Lifting of Degeneracy
Time-Dependent Perturbation Theory
Interaction Picture
First-Order Time-Dependent Perturbation
Transition Probabilities
Fermi's Golden Rule
Adiabatic Approximation
Variational Method
Variational Principle
Trial Wavefunctions
Linear Variational Method
Application to Helium Atom
WKB Approximation
Semiclassical Approximation
Connection Formulas
Tunneling Applications
Advanced Formalism
Dirac Notation
Ket and Bra Vectors
Inner Products
Outer Products
Completeness Relations
Matrix Elements
Representation Theory
Position Representation
Momentum Representation
Energy Representation
Transformation Between Representations
Scattering Theory
Scattering Cross Section
Phase Shifts
Partial Wave Analysis
Born Approximation
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3. Electronic Structure Theory