Deformation of Okamoto-Painleve pairs and Painleve equations
HAMILTONIAN STRUCTURE OF THE PAINLEVE’ EQUATIONS
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Transcript of HAMILTONIAN STRUCTURE OF THE PAINLEVE’ EQUATIONS
HAMILTONIAN STRUCTURE OF THE PAINLEVE’ EQUATIONS
• Hamiltonian formulation:
• Isomonodromic deformations method (IMD):
Example: PII
HAMILTONIAN STRUCTURE OF THE PAINLEVE’ EQUATIONS
• Hamiltonian formulation:
• Isomonodromic deformations method (IMD):
Example: PII
HAMILTONIAN STRUCTURE OF THE PAINLEVE’ EQUATIONS
• Hamiltonian formulation:
• Isomonodromic deformations method (IMD):
Example: PII
HAMILTONIAN STRUCTURE OF THE PAINLEVE’ EQUATIONS
• Hamiltonian formulation:
• Isomonodromic deformations method (IMD):
Example: PII
Example: PII
In this course we shall see how to deduce the Hamiltonian formulation from the IMD.
Motivation: find the Hamiltonian structure of more complicated generalizations of the Painleve’ equations
In this course we shall see how to deduce the Hamiltonian formulation from the IMD.
Motivation: find the Hamiltonian structure of more complicated generalizations of the Painleve’ equations
Example: PII (2)
What are p , p , q , q in this case? What is H?1 1 22
In this course we shall see how to deduce the Hamiltonian formulation from the IMD.
Motivation: find the Hamiltonian structure of more complicated generalizations of the Painleve’ equations
Example: PII (2)
What are p , p , q , q in this case? What is H?1 1 22
Literature: Adler-Kostant-Symes, Adams-Harnad-Hurtubise, Gehktman, Hitchin, Krichever, Novikov-Veselov, Scott, Sklyanin……………..
Recent books: Adler-van Moerbeke-Vanhaeke Babelon-Bernard-Talon
Recap on Poisson and symplectic manifolds.(Arnol’d, Classical Mechanics)
• M = phase space
• F(M) = algebra of differentiable functions
Recap on Poisson and symplectic manifolds.(Arnol’d, Classical Mechanics)
• M = phase space
• F(M) = algebra of differentiable functions
• Poisson bracket: { , }: F(M) x F(M) -> F(M)
{f,g} = -{g,f} skewsymmetry
{f, a g+ b h} = a {f,g} + b {f,h} linearity
{f,{g,h}} + {h,{f,g}} + {g,{h,f}} = 0 Jacobi
{f, g h} = {f, g} h + {f, h} g Libenitz
Recap on Poisson and symplectic manifolds.(Arnol’d, Classical Mechanics)
• M = phase space
• F(M) = algebra of differentiable functions
• Poisson bracket: { , }: F(M) x F(M) -> F(M)
{f,g} = -{g,f} skewsymmetry
{f, a g+ b h} = a {f,g} + b {f,h} linearity
{f,{g,h}} + {h,{f,g}} + {g,{h,f}} = 0 Jacobi
{f, g h} = {f, g} h + {f, h} g Libenitz
• Vector field XH associated to H eF(M): XH(f):= {H,f}
Recap on Poisson and symplectic manifolds.(Arnol’d, Classical Mechanics)
• M = phase space
• F(M) = algebra of differentiable functions
• Poisson bracket: { , }: F(M) x F(M) -> F(M)
{f,g} = -{g,f} skewsymmetry
{f, a g+ b h} = a {f,g} + b {f,h} linearity
{f,{g,h}} + {h,{f,g}} + {g,{h,f}} = 0 Jacobi
{f, g h} = {f, g} h + {f, h} g Libenitz
• Vector field XH associated to H eF(M): XH(f):= {H,f}
A Posson manifold is a differentiable manifold M with a Poisson bracket { , }
Recap on Lie groups and Lie algebras
Lie group G: analytic manifold with a compatible group structure• multiplication: G x G --> G• inversion: G --> G
Recap on Lie groups and Lie algebras
Lie group G: analytic manifold with a compatible group structure• multiplication: G x G --> G• inversion: G --> G
Example:
Recap on Lie groups and Lie algebras
Lie group G: analytic manifold with a compatible group structure• multiplication: G x G --> G• inversion: G --> G
Example:
Lie algebra g: vector space with Lie bracket
• [x, y] = -[y,x] antisymmetry
• [a x + b y,z] = a [x, z] + b [y, z] linearity
• [x, [y, z]] + [z, [x, y]] + [y, [z, x]] = 0 Jacobi
Recap on Lie groups and Lie algebras
Lie group G: analytic manifold with a compatible group structure• multiplication: G x G --> G• inversion: G --> G
Example:
Lie algebra g: vector space with Lie bracket
• [x, y] = -[y,x] antisymmetry
• [a x + b y,z] = a [x, z] + b [y, z] linearity
• [x, [y, z]] + [z, [x, y]] + [y, [z, x]] = 0 Jacobi
Example:
• Given a Lie group G its Lie algebra g is Te G.
Adjoint and coadjoint action.
Example: G = SL(2,C). Then
• Given a Lie group G its Lie algebra g is Te G.
Adjoint and coadjoint action.
Example: G = SL(2,C). Then
• g acts on itself by the adjoint action:
• Given a Lie group G its Lie algebra g is Te G.
Adjoint and coadjoint action.
Example: G = SL(2,C). Then
• g acts on itself by the adjoint action:
• g acts on g* by the coadjoint action:
Kostant - Kirillov Poisson bracket on the dual of a Lie algebra
• Differential of a function
Example: PII. Take