## Statistical Physics, Part 2: Theory of the Condensed State |

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### Contents

THE NORMAL FERMI LIQUID 1 Elementary exitations in a quantum Fermi liquid | 1 |

Interaction of quasiparticles | 8 |

Magnetic susceptibility of a Fermi liquid | 12 |

Copyright | |

89 other sections not shown

### Common terms and phrases

According applied approximation atoms becomes body Bose calculate closed components condition consider constant contains continuous contribution coordinates correction corresponding crystal defined definition denote density dependence derivative determined diagrams direction distances distribution effect electron energy equal equation excitations expansion expression external fact factor Fermi Fermi surface field fluctuations follows formula Fourier given gives Green's function Hamiltonian Hence independent integral interaction lattice limit lines liquid macroscopic magnetic magnetic field matrix elements means medium metal momentum motion normal obtain occur operator pair particles phase phonon physical pole potential presence problem properties quantities quantum quasi-particle range regarded relation replaced representation respect result rule satisfied solution spectrum Substituting superconductivity superfluid taken temperature theory thermodynamic tion transformation transition unit variable vector volume vortex wave function written zero