Biphonons in the Klein-Gordon lattice
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Service de Recherches de Metallurgie Physique, CEA/DEN/DMN Saclay, 91191-Gif-sur-Yvette Cedex (France)
A numerical approach is proposed to compute the quantum eigenmodes of a nonlinear Klein-Gordon lattice. In agreement with other studies on different lattices, nonlinearity is found to lead to a phonon pairing and consequently some biphonon excitations. The energy branch and the correlation properties of the Klein-Gordon biphonon are studied in detail.
- OSTI ID:
- 20666239
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 10 Vol. 71; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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