Dispersions of Many-Body Bethe strings

31 Aug 2019 Bera Anup Kumar Wu Jianda Yang Wang Wang Zhe Bewley Robert Boehm Martin Bartkowiak Maciej Prokhnenko Oleksandr Klemke Bastian Islam A. T. M. Nazmul Law Joseph Mathew Lake Bella

Complex bound states of magnetic excitations, known as Bethe string, were predicted almost a century ago to exist in one-dimensional quantum magnets 1. The dispersions of the string states have so far remained the subject of intensive theoretical studies 2-7... (read more)

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