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Dispersionless Toda and Toeplitz operators

A. Bloch, F. Golse, T. Paul, and A. Uribe
Source: Duke Math. J. Volume 117, Number 1 (2003), 157-196.

Abstract

In this paper we present some results on the dispersionless limit of the Toda lattice equations viewed as the semiclassical limit of an equation involving certain Toeplitz operators. We consider both nonperiodic and periodic boundary conditions. For the nonperiodic case the phase space is the Riemann sphere, while in the periodic case it is the torus $\mathbb {C}/\mathbb {Z}\sp 2$. In both cases we prove precise estimates on the dispersionless limit. In addition, we show that the Toda equations, although they are nonlinear, propagate a Toeplitz operator into an operator arbitrarily close to a Toeplitz operator as long as the Toda partial differential equation (PDE) (dispersionless limit) admits smooth solutions.

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Primary Subjects: 37K60
Secondary Subjects: 35P20, 47B35
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Links and Identifiers

Permanent link to this document: http://projecteuclid.org/euclid.dmj/1085598341
Mathematical Reviews number (MathSciNet): MR1962785
Digital Object Identifier: doi:10.1215/S0012-7094-03-11713-5
Zentralblatt MATH identifier: 1024.37047

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