## Lectures in Theoretical Physics, Volume 7 |

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### Contents

THE NATURE OF CRITICAL POINTS | 5 |

Chapter | 7 |

Contents Continued Chapter II | 24 |

Copyright | |

46 other sections not shown

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### Common terms and phrases

analytic antiferromagnetic assume axis behaviour calculate classical coefficients coherence collective modes configuration consider constant convergence correlation functions corresponding cosmic rays coupling critical point cubic lattice curve decay defined density derivation distribution electron equation estimate expansion experimental expression factor Fermi Fermi liquid fermions ferromagnet Figure finite fluctuations formula Fourier free energy given grand canonical Hamiltonian hard core Heisenberg Heisenberg model hence integral interaction Ising lattice Ising model limit logarithmic M. E. Fisher magnetic field matrix mean field method momentum motion nearest neighbour neutrino obtain operator oscillator Pade approximant pair particles partition function phase space phase transition phonon Phys physical plane pole potential properties quantum quasi-particle ratio relation result Section singularity specific heat spectrum spin square lattice susceptibility symmetry T-Tc theorem theory thermal thermodynamic tion transformation variables vector velocity wave function weak interaction zero field