## Quantum Field Theory: Proceedings of the International Symposium in Honour of Hiroomi Umezawa, Held in Positano, Salerno, Italy, June 5-7, 1985 |

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### Contents

Quantum field theory in postwar Japan | 1 |

Canonical quantization and generalized Ward relations | 19 |

Frozen symmetries and the effective dynamics | 39 |

Copyright | |

36 other sections not shown

### Common terms and phrases

action algebra appear applied approach approximation asymptotic becomes boson calculation called canonical charge classical completely condition connection consider constant constructed corresponding cosmic rays coupling critical defined denotes density dependence derivative described determined dimensional discussed dynamical effective electron energy equation example existence expression extended external fact finite formulation function gauge given gives ground Hamiltonian Heisenberg integral interaction introduce invariant Italy Lagrangian leads Lett limit linear magnetic mass Matsumoto means mechanics method modes nature object observed obtain operator parameter particles perturbation phase Phys physical possible potential present problem properties quantization quantum field theory quantum mechanical REFERENCES relation representation requires respect result satisfies Science shown solution space structure symmetry temperature theorem thermal tion transformation Umezawa University usual vacuum vector zero