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cond-mat.stat-mech2021
Three-wave resonant interactions in the diatomic chain with cubic anharmonic potential: theory and simulations
A. Pezzi, G. Deng, Y. Lvov +2
We consider a diatomic chain characterized by a cubic anharmonic potential. After diagonalizing the harmonic case, we study in the new canonical variables, the nonlinear interactio…
cond-mat.stat-mech2020★ 10 cited
Negative temperature states as exact equilibrium solutions of the Wave Kinetic equation for one dimensional lattices
M. Onorato, G. Dematteis, D. Proment +3
We predict negative temperature states in the Discrete Nonlinear Schödinger equation as exact solutions of the associated Wave Kinetic equation. Those solutions are consistent with…