Topology of the real part of hyperelliptic Jacobian associated with the periodic Toda lattice

Details Topology of the real part of hyperelliptic Jacobian associated with the periodic Toda lattice Topology of the real part of hyperelliptic Jacobian associated with the periodic Toda lattice

2002-01-08

arxiv.org/abs/nlin/0201009v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

18 pages, AMSLaTeX, Submitted for the special issue of NEEDS 2001

Scientific paper

This paper concerns the topology of the isospectral {\it real} manifold of the ${\mathfrak sl}(N)$ periodic Toda lattice consisting of $2^{N-1}$ different systems. The solutions of those systems contain blow-ups, and the set of those singular points defines a devisor of the manifold. Then adding the divisor, the manifold is compactified as the real part of the $(N-1)$-dimensional Jacobi variety associated with a hyperelliptic Riemann surface of genus $g=N-1$. We also study the real structure of the divisor, and then provide conjectures on the topology of the affine part of the real Jacobian and on the gluing rule over the divisor to compactify the manifold based upon the sign-representation of the Weyl group of ${\mathfrak sl}(N)$.

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