Discrete breathers in a two-dimensional hexagonal Fermi-Pasta-Ulam lattice
Journal Article
Butt, I. A., & Wattis, J. A. Discrete breathers in a two-dimensional hexagonal Fermi-Pasta-Ulam lattice
We consider a two-dimensional Fermi-Pasta-Ulam (FPU) lattice
with hexagonal symmetry. Using asymptotic methods based on
small amplitude ansatz, at third order we obtain a eduction to a cubic nonlinear Schr{\"o}dinger equation (NLS) for the breathe...
Read More about Discrete breathers in a two-dimensional hexagonal Fermi-Pasta-Ulam lattice.