Wave Modulations in Anharmonic Lattices
Open Access
- 1 October 1972
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 48 (4) , 1196-1203
- https://doi.org/10.1143/ptp.48.1196
Abstract
Wave modulations in one-dimensional anharmonic lattices are studied by the use of a perturbation method established by Taniuti and Yajima. A system of equations to determine the evolution of the slowly varying parts in the lowest order of an asymptotic expansion is derived. One interesting result is that the nonlinearly modulated wave must be accompanied by the other slowly varying wave which tends to stabilize the modulated one.Keywords
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