Abstract
Based on the characteristic polynomial of Lax matrix for the hierarchy of coupled Toda lattices associated with a \(3\times3\) discrete matrix spectral problem, we introduce a trigonal curve with two infinite points, from which we establish the associated Dubrovin-type equations. The asymptotic properties of the meromorphic function and the Baker-Akhiezer function are studied near two infinite points on the trigonal curve. Finite-band solutions of the entire hierarchy of coupled Toda lattices are obtained in terms of the Riemann theta function.
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This work was supported by National Natural Science Foundation of China (Grant nos. 11331008 and 11601488).
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Zeng, X., Geng, X. Finite-Band Solutions for the Hierarchy of Coupled Toda Lattices. Acta Appl Math 154, 59–81 (2018). https://doi.org/10.1007/s10440-017-0133-2
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DOI: https://doi.org/10.1007/s10440-017-0133-2