Separability in 1+1 Dimensions in Classical Nonlinear Fields

Details Separability in 1+1 Dimensions in Classical Nonlinear Fields Separability in 1+1 Dimensions in Classical Nonlinear Fields

2010-04-27

arxiv.org/abs/1004.4780v1

Nonlinear Sciences

Pattern Formation and Solitons

9 pages, 5 figures

Scientific paper

Solitary wave and soliton solutions of nonlinear equations are well known for physicists. A soliton is a solitary wave with some outstanding features which make it reasonable to be studied seriously in nonlinear systems. In fact most of the nonlinear systems which have solitary wave solutions, has no soliton solutions. To realize a solitary wave as a soliton, we must prepare some initial conditions to collide two or more solitary wave solutions. In fact it is not possible to prepare such initial conditions for any nonlinear system with solitary wave solutions. In this paper we study the conditions that a system should have, to prepare a combination of its single solitary wave solutions as an initial condition for collision. These systems accept a combination of separated single solitary waves as an initial condition, so we call them separable systems. We see a system with periodic potential that zero is one of its vacuum points is separable. We observed that separable systems have two distinct set of solitons, but in general, if we collide members of different sets, they may not behave like solitons.

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