Second Quantized Approach to Quantum Chemistry: An Elementary Introduction

Second Quantized Approach to Quantum Chemistry: An Elementary Introduction

by Peter R. Surjan

Paperback(Softcover reprint of the original 1st ed. 1989)

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Product Details

ISBN-13: 9783642747571
Publisher: Springer Berlin Heidelberg
Publication date: 12/13/2011
Edition description: Softcover reprint of the original 1st ed. 1989
Pages: 184
Product dimensions: 6.10(w) x 9.25(h) x 0.02(d)

Table of Contents

1 Introduction.- 1.1 Importance of Second Quantization.- 1.2 The One-Electron Model.- 2 Concept of Creation and Annihilation Operators.- 2.1 The Vacuum State.- 2.2 Creating Electrons.- 2.3 Particle Number Representation.- 2.4 Annihilating Electrons.- 2.5 Commutator Relation between Creation and Annihilation Operators.- 2.6 The Adjoint Relation — Role of Orthogonality of One-Particle States.- 2.7 Summary of the Properties of Creation/Annihilation Operators.- 3 Particle Number Operators.- 4 Second Quantized Representation of Quantum Mechanical Operators.- 4.1 General.- 4.2 One-Electron Operators.- 4.3 Two-Electron Operators.- 4.4 Second Quantized Form of the Born-Oppenheimer Hamiltonian.- 4.5 Hermiticity of Second Quantized Operators.- 5 Evaluation of Matrix Elements.- 5.1 Basic Matrix Elements.- 5.2 Concept of the Fermi Vacuum.- 6 Advantages of Second Quantization — Illustrative Examples.- 6.1 General.- 6.2 Overlap of two Determinants.- 6.3 Hückel Energy Expression.- 6.4 Interaction of Two Electrons.- 7 Density Matrices.- 7.1 First-Order Density Matrix.- 7.2 Second-Order Density Matrix.- 7.3 Hartree-Fock Energy Expression.- 8 Connection to “Bra and Ket” Formalism.- 9 Using Spatial Orbitals.- 10 Some Model Hamiltonians in Second Quantized Form.- 10.1 ?-Electron Hamiltonians.- 10.1.1 Hückel Level.- 10.1.2 Hubbard Model.- 10.1.3 Pariser-Parr-Pople (PPP) Model.- 10.2 Particle-Hole Symmetry.- 10.3 All-Valence Electron Hamiltonians.- 10.4 The Hartree-Fock Hamiltonian.- 11 The Brillouin Theorem.- 12 Many-Body Perturbation Theory.- 13 Second Quantization for Nonorthogonal Orbitals.- 13.1 Anticommutation Rules.- 13.2 The Hamiltonian in Nonorthogonal Representations.- 13.3 Extended Hückel Theory.- 14 Second Quantization and Hellmann-Feynman Theorem.- 14.1 General.- 14.2 Variation of Energy-Orthogonal Basis Set.- 14.3 Variation of Energy-Nonorthogonal Basis Set.- 14.4 Special Case: The SCF Gradient Formula.- 15 Intermolecular Interactions.- 15.1 The Operator for Interaction.- 15.2 Symmetry-Adapted Perturbation Theory.- 16 Quasiparticle Transformations.- 16.1 One-Particle Transformations.- 16.2 Two-Particle Transformations.- 16.3 A Theory of the Local Chemical Bond.- 17 Miscellaneous Topics Related to Second Quantization.- 17.1 Spin Operators and Spin Hamiltonians.- 17.2 Unitary Group Approach.- 18 Problem Solutions.- 19 References.

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