Koski K. Introduction to Quantum Mechanic 2024

Textbook in PDF format

Introduction to the postulates and general principles of quantum mechanics. Approximations based on variational method and time independent perturbation theory. Application to harmonic oscillator, rigid rotor, one-electron and many-electron atoms, and homo-and hetero-nuclear diatomic molecules.
The Dawn of the Quantum Theory
The Classical Wave Equation
The Schrödinger Equation
Postulates and Principles of Quantum Mechanics
The Harmonic Oscillator and the Rigid Rotor
The Hydrogen Atom
Approximation Methods
Multielectron Atoms
The Chemical Bond: Diatomic Molecules
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