Periodic problem for a model nonlinear evolution equation

Abstract

We study the large time asymptotic behavior of solutions to the periodic problem for a model nonlinear evolution equation. This equation has a general structure, it contains many well-known equations of mathematical physics, such as: the Korteweg-de Vries equation and nonlinear Schrödinger equation. We find the asymptotic representation of solution. Depending on the linear part of equation and the structure of the nonlinearity the solution can exponentially decay with time, oscillate or grow exponentially with time. Taking into account the symmetry of the nonlinear term we consider the case of large initial data.