Open AccessGap breathers in the one-dimensional Klein-Gordon diatomic chain
Author(s) -
Li Mi-Shan,
Qiang Tian
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.1041
Subject(s) - diatomic molecule , breather , coupling constant , physics , constant (computer programming) , mass ratio , nonlinear system , chain (unit) , coupling (piping) , boundary value problem , quantum mechanics , condensed matter physics , materials science , molecule , computer science , astrophysics , metallurgy , programming language
The gap breathers (GBs) in a one-dimensional Klein-Gordon diatomic chain are studied under rotating-wave approximation (RWA). The analytical investigation of heavy-particle centered symmetric mode (HS mode) has been implemented under the boundary condition of standing waves. We examine the effects of the coupling constant, nonlinear constant and the mass ratio on the GBs. The GB profiles are sensitive to the coupling constant, nonlinear constant and the mass ratio. As the coupling constant increases, the GB profiles become broader. But, with the nonlinearity and the mass ratio increasing, the GB profiles appear more localized.