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

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.

Latex 7 pages + 2 figs., version to be published in J. Phys. A

References in corpus (1)

• Bloch Walls and Macroscopic String States in Bethe's solution of the Heisenberg Ferromagnetic Linear Chain

Cited by in corpus (2)

• Tracing the Sgr Stream with 2MASS. Detection of Stream stars around Outer Halo Globular Clusters
• Quantum Dot at a Luttinger liquid edge