## The Dielectric function of condensed systemsMuch progress has been made in the understanding of the general properties of the dielectric function and in the calculation of this quantity for many classes of media. This volume gathers together the considerable information available and presents a detailed overview of the present status of the theory of electromagnetic response functions, whilst simultaneously covering a wide range of problems in its application to condensed matter physics. The following subjects are covered: - the dielectric function of the homogeneous electron gas, of crystalline systems, and of inhomogeneous matter; - electromagnetic fluctuations and molecular forces in condensed matter; - electrodynamics of superlattices. |

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### Contents

The spatial microstructure of the field in a condensed medium | 17 |

polaritons excitons plasmons | 33 |

General properties of electromagnetic response functions | 41 |

Copyright | |

36 other sections not shown

### Common terms and phrases

account taken atoms average Barash calculations characteristic condition consider contribution correlation function corresponding crystal density dependence derived determined dielectric constant dielectric function dipole dispersion relations Dolgov eigenfrequencies Eksp electric field electrodynamics electromagnetic field electron gas example excitations excitons expression external field fluctuations formula Fourier component free energy frequency Ginzburg given Green's function Hamiltonian Hartree-Fock inhomogeneous systems integral interacting electrons Kirzhnitz Kramers-Kronig relations Landau layers Lett Lifshitz local-field correction local-field effects longitudinal Lozovik magnetic Maksimov matrix Maxwell's equations medium metals modes normal waves obtain operator pair correlation function parameter particles phonon Phys physical plasma oscillations plasmon polaritons polarizability polarization potential problem properties quantity quantum random phase approximation random-phase region response function result self-consistent solution spatial dispersion spectrum static structure factor sum rule superlattice surface taken into account tensor Teor term theory transverse values vector Waals forces Waals interaction wavevector Xo(q zero