engleski

Discrete approach to incoherent excitations in conductors

While keeping the discreteness of the reciprocal space, we calculate the spectrum of incoherent electron-hole excitations in the conducting Fermi liquids. The method is illustrated on the well'known jellium model within the random phase approximation. It also leads to the formulation of the sum rule from which we get the details of the dispersion curve for the collective plasmon mode. The notion of time averaging in the discrete approach is briefly recalled.

conducting Fermi liquids; discrete reciprocal space; incoherent electron-hole excitations; jellium model;random phase approximation; collective plasmon mode; dispersion curve

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