Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2012-03-27
Nonlinear Sciences
Exactly Solvable and Integrable Systems
37 pages and 11 figures. We added some comments and references in the new version
Scientific paper
This is a continuation of Ref.[1](arXiv:nlin.SI/0603008). In the present paper we review solutions to the modified Korteweg-de Vries equation in terms of Wronskians. The Wronskian entry vector needs to satisfy a matrix differential equation set which contains complex operation. This is different from the case of the Korteweg-de Vries equation. We introduce an auxiliary matrix to deal with the complex operation and then we are able to give complete solution expressions for the matrix differential equation set. The obtained solutions to the modified Korteweg-de Vries equation can simply be categorized by two types: solitons and breathers, together with their limit cases. Besides, we give rational solutions to the modified Korteweg-de Vries equation in Wromskian form. This is derived with the help of the Galilean transformed modified Korteweg-de Vries equation. Finally, typical dynamics of the obtained solutions is analyzed and illustrated. We list out the obtained solutions and their corresponding basic Wronskian vectors in the conclusion part.
Sun Ying-ying
Zhang Da-jun
Zhao Song-lin
Zhou Jing
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