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Seminar of the Department of Theoretical Physics, Steklov Mathematical Institute of RAS
February 19, 2020 14:00, Moscow, Steklov Mathematical Institute of RAS, Room 404 (8 Gubkina)
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Spectral dualities for the rational Painlevé systems
I. Yu. Gaiur University of Birmingham
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Abstract:
The extension of the Painlevé-Calogero correspondence for n-particle Inozemtsev systems raises to the multi-particle generalisations of the Painlevé equations. This multi-particle Painlevé systems may be obtained by the procedure of Hamiltonian reduction applied to the matrix Painlevé systems. This procedure also gives isomonodromic formulation for the obtained non-autonomous multi-particle Hamiltonian systems. In my talk I will show how to obtain these multi-particle Painlevé systems with isomonodromic problems and introduce the dual systems for the rational Painlevé systems (multi-particle generalisation of PIV, PII and PI). This duality may be described in terms of spectral curve of corresponding isomonodromic problem. I will also show how this duality may be extended for any polynomial matrix Hamiltonian system which allows isospectral or isomonodromic representations. Finally, I will discuss the autonomisation of these multi-particle Painlevé equations which may be viewed as the further degeneration of rational Inozemtsev system and how this degeneration connected with a confluence scheme of the Painlevé systems.
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