## Proceedings of the International School of Physics "Enrico Fermi.", Volume 37N. Zanichelli, 1967 - Nuclear physics |

### From inside the book

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Page 128

If only fermion and boson

If only fermion and boson

**operators**were involved in the problem , one would reduce the terms of the series into diagrams by means of Wick's theorem .Page 153

Consider the annihilation

Consider the annihilation

**operator**vír , t ) of an electron at r in « Heisenberg representation , satisfying the equation of motion .Page 154

y ( r , t ) corresponds to the

y ( r , t ) corresponds to the

**operator**at time t evolving under the unperturbed Hamiltonian from a given initial pre - collision**operator**at time t ' = -0 ...### What people are saying - Write a review

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### Contents

LOMER Band theory and magnetism | 1 |

JACCARINO Studies of the hyperfine interaction in transi | 39 |

P W ANDERSON and W L MCMILLAN Multiplescattering | 50 |

Copyright | |

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### Common terms and phrases

alloys amplitude analytic Anderson approximation assume average band becomes Born bound calculation complex computed condition conduction consider contribution correct correlation corresponding coupling curve defined density depends determined discussed effect electrons energy equation exchange expected expression fact factor Fermi Fermi level ferromagnetic field function given gives Hamiltonian host metal impurity atom included integral interaction interesting lattice limit localized magnetic matrix element means metals method moments momentum normal obtained occur operator orbital particle perturbation Phys physical plane polarization poles positive possible potential present problem properties range relation replaced represent resonance scattering screening Sect seems shift shown similar simple solution spin structure surface temperature theory tion transition metals usual wave wave functions write written zero