Head-on and head-off collisions of discrete breathers in two-dimensional anharmonic crystal lattices

Collisions of discrete breathers (DB) moving toward each other along neighboring close packed atomic rows in a 2D crystal lattice are investigated by molecular dynamics computer simulations. It is shown that a DB can draw energy from the other and emerge from the collision with amplitude much greater than its initial amplitude

Head-on and head-off collisions of discrete breathers in two-dimensional anharmonic crystal lattices

Collisions of discrete breathers (DB) moving toward each other along neighboring close packed atomic rows in a 2D crystal lattice are investigated by molecular dynamics computer simulations. It is shown that a DB can draw energy from the other and emerge from the collision with amplitude much greater than its initial amplitude