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Biphonons in the Klein-Gordon lattice

L. Proville
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Abstract

A numerical approach is proposed for studying the quantum optical modes in the Klein-Gordon lattices where the energy contribution of the atomic displacements is non-quadratic. The features of the biphonon excitations are investigated in detail for different non-quadratic contributions to the Hamiltonian. The results are extended to multi-phonon bound states.

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BibTeXRIS

L. Proville. 2005-01-21. Biphonons in the Klein-Gordon lattice. https://doi.org/10.1103/physrevb.71.104306

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