2004/03/31 by Laurent Proville, L. Proville
Physics and Astronomy · #Advanced Fiber Laser Technologies #Laser-Matter Interactions and Applications #Nonlinear Photonic Systems #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.71.104306
Comments and suggestions are welcome
arxiv created 2005/01/21 · openalex publication_date 2005/03/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.