with the increasing
oscillation amplitude. Obtained results indicate the presence of a wide variety of
nonlinear, large-amplitude vibrational modes in
nonlinear lattices. Rod-like discrete breathers (DBs) have been
. The two-dimensional DBs exhibit hard-type
nonlinearity, characterized by an increase in
oscillation.5-1.0 eV per
oscillating atom. The two-dimensional DBs have a hard-type of
nonlinearity and a lifetime
modes in a defect free
nonlinear crystal lattice, i.e., discrete breathers (DBs). For that, dynamics
triangular lattice due to the modulation instability of delocalized
nonlinear vibrational modes (DNVMs
) lattice is analyzed. These solutions take the form of delocalized
nonlinear vibrational modes (DNVMs
МАЛАЯ НУТАЦИЯ СИММЕТРИЧНОГО ГИРОСКОПА: ДВЕ ТОЧКИ ЗРЕНИЯ is obtained. In this case, the frequencies of third order Raman
oscillations are both the tripled frequency
Kolesnikov, I.D.,
Shcherbinin, S.A.,
Bebikhov, Yu.V.,
Korznikova, E.A.,
Shepelev, I.A.,
Kudreyko, A.A.,
Dmitriev, S.V. (2024) It is well known that a modulationally unstable short-wavelength delocalized
nonlinear vibrational