Instability of two-dimensional solitons in discrete systems
Laedke E. W. , Spatschek K. H. , Mezentsev V. K. , Musher S. L. , Ryzhenkova I. V. , Turitsyn S. K.
An exact analytical criterion for the instability of discrete soliton solutions of the two-dimensional discrete nonlinear Schrodinger equation is presented. Two-dimensional discrete oscillating breather-like solutions are also examined. © 1995 American Institute of Physics.