https://doi.org/10.1140/epjb/e2012-30294-8
Regular Article
Investigation of energy relaxation in 1-D nonlinear lattices by wavelets
1
Dicle University, Faculty of Science, Physics
Department, 21280
Diyarbakır,
Turkey
2
Adnan Menderes University, Faculty of Science and Literature,
Physics Department, 09100
Aydın,
Turkey
a e-mail: sibuli@yahoo.com
Received:
5
April
2012
Received in final form:
14
July
2012
Published online:
29
November
2012
The movement and relaxation of the localized energy on FPU lattices have been studied by using Wavelet transforms methods. The energy relaxation mechanism for nonlinear chains involves the degradation of higher frequency excitations into lower frequencies. It is shown that low frequency modes decay more slowly in nonlinear chains. The wavelet spectrum exhibits a behavior involving the interplay of phonon modes and breather modes.
Key words: Statistical and Nonlinear Physics
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2012