Consistent refinement of Bethe strings for spin and electron models and a new non-Bethe solution

Anjan Kundu

doi:10.1088/0305-4470/35/10/101

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Consistent refinement of Bethe strings for spin and electron models and a new non-Bethe solution

Anjan Kundu

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Abstract

Well known Bethe strings in spin chains, delta-electron gas, Hubbard and t-J models are shown to be imprecise, while their consisten refinement along with a new non-Bethe r-string are discovered. Connection with the earlier results is established and the string hypothesis problem is discussed in the light of the present findings.

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Anjan Kundu. 2002-02-13. Consistent refinement of Bethe strings for spin and electron models and a new non-Bethe solution. https://doi.org/10.1088/0305-4470%2F35%2F10%2F101

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