Violation of the string hypothesis and the Heisenberg $XXZ$ spin chain

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1 September 1999

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 60 (10) , 7271-7277
DOI:10.1103/physrevb.60.7271

Abstract

In this paper we count the numbers of real and complex solutions to Bethe constraints in the two-particle sector of the

XXZ

model. We find the exact number of exceptions to the string conjecture and total number of solutions that is required for completeness.

Keywords

FIELD THEORY

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Version 1, 1999-07-14, ArXiv

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