Incoherent bound states in an infinite $XXZ$ chain at $Δ=-1/2$

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For an infinite $XXZ$ chain with $Δ=-1/2$ we have obtained a family of translationary invariant three-magnon states which do not satisfy the string conjecture. All of them have the same energy.
7 pages

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Exactly Solvable and Integrable Systems

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http://salesiana.dossiersoluciones.com/handle/123456789/229942

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0905.1494
 http://arxiv.org/abs/0905.1494

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arXiv