On the symmetric formulation of the Painleve IV equation

Details On the symmetric formulation of the Painleve IV equation On the symmetric formulation of the Painleve IV equation

2009-09-18

arxiv.org/abs/0909.3532v1

Physics

Mathematical Physics

24 pages

Scientific paper

Symmetries and solutions of the Painleve IV equation are presented in an alternative framework which provides the bridge between the Hamiltonian formalism and the symmetric Painleve IV equation. This approach originates from a method developed in the setting of pseudo-differential Lax formalism describing AKNS hierarchy with the Darboux-Backlund and Miura transformations. In the Hamiltonian formalism the Darboux-Backlund transformations are introduced as maps between solutions of the Hamilton equations corresponding to two allowed values of Hamiltonian's discrete parameter. The action of the generators of the extended affine Weyl group of the $A_2$ root system is realized in terms of three "square-roots" of such Darboux-Backlund transformations defined on a multiplet of solutions of the Hamilton equations.

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