TY  - JOUR
A1  - Pikovskij, Arkadij
T1  - First and second sound in disordered strongly nonlinear lattices: numerical study
JF  - Journal of statistical mechanics: theory and experiment
N2  - We study numerically secondary modes on top of a chaotic state in disordered nonlinear lattices. Two basic models are considered, with or without a local on-site potential. By performing periodic spatial modulation of displacement and kinetic energy, and following the temporal evolution of the corresponding spatial profiles, we reveal different modes which can be interpreted as first and second sound.
KW  - disordered systems (theory)
KW  - connections between chaos and statistical physics
Y1  - 2015
U6  - https://doi.org/10.1088/1742-5468/2015/08/P08007
SN  - 1742-5468
PB  - IOP Publ. Ltd.
CY  - Bristol
ER  -