The Quantum Mechanics of Many-body Systems |
Contents
SOLUBLE MODELS | 7 |
LOWLYING EXCITED STATES | 13 |
VARIATIONAL METHODS | 26 |
Copyright | |
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a₁ angular momentum annihilation operators approximation atom bosons Brueckner theory calculate Chapter commutation configuration contribution coordinates Coulomb d³r defined by Eq density matrix diagonal discussed eigenstates eigenvalues electrons equilibrium excited expansion expectation value expression external line Fermi surface fermions finite temperatures given by Eq gives Green function H₁ Hamiltonian Hartree-Fock Hartree-Fock equations Hartree-Fock theory integral interaction k₁ kinetic energy linked graphs liquid He³ liquid helium many-body matrix elements method N₂ neutrons noninteracting nuclear matter nuclei nucleons number of particles obtained one-particle Green function orthogonal oscillations pairing perturbation theory phonons Phys physical plane waves plasma oscillations potential energy problem properties proportional protons quantization quantum mechanics quasiparticle r₁ r₂ real axis region repulsive Schrödinger equation self-consistent shell model shown in Fig single-particle solution spherical superconductivity superfluid symmetric t₁ t₂ term two-particle unperturbed variables wave function Σ Σ