Abstract
We would like to show that the spectral data \((\varSigma ,\mathcal {D})\) corresponding to a potential behave like the spectral data \((\varSigma _0,\mathcal {D}_0)\) of the vacuum (as described in Chap. 4) “asymptotically” for λ near ∞, and for λ near 0. In particular, we would like to show that the classical spectral divisor D corresponding to \(\mathcal {D}\), like the classical spectral divisor D 0 of the vacuum, is composed of a \(\mathbb {Z}\)-sequence of points \((\lambda _k,\mu _k)_{k\in \mathbb {Z}}\), and that for |k| large, (λ k, μ k) ∈ D is near (λ k,0, μ k,0) ∈ D 0. Similarly, we will show that the set of zeros of Δ 2 − 4 with multiplicities (corresponding to the branch points resp. singularities of the spectral curve Σ) is enumerated by two \(\mathbb {Z}\)-sequences (ϰk,1) and (ϰk,2) such that for |k| large, ϰk,1 and ϰk,2 are near λ k,0.
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References
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Klein, S. (2018). Basic Behavior of the Spectral Data. In: A Spectral Theory for Simply Periodic Solutions of the Sinh-Gordon Equation. Lecture Notes in Mathematics, vol 2229. Springer, Cham. https://doi.org/10.1007/978-3-030-01276-2_6
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DOI: https://doi.org/10.1007/978-3-030-01276-2_6
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