1969•Physical ReviewRequires access

Theory of Nonlinear Effects in Crystals in the Second-Quantization Representation

Dragutin Lalović, Bratislav S. Tosic, R. B. Žakula

Abstract

A method for an exact theoretical treatment of nonlinear (anharmonic) effects in crystals in the second quantization representation is presented. The method represents essentially a generalization of Bogolyubov's method of approximate second quantization. In addition, the Fermi representation of elementary excitation creation and annihilation operators is given.

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Key concepts: Quantization (signal processing), Anharmonicity, Second quantization, Creation and annihilation operators, Nonlinear system, Physics, Representation (politics), Excitation