Violation of the string hypothesis and Heisenberg XXZ spin chain

A. Foerster; A. Foerster; A. Foerster; A. Luther; A. N. Kirillov; Amon Ilakovac; C. Destri; C. W. H. Lee; F. H. L. Essler; F. H. L. Essler; F. H. L. Essler; F. Woynarovich; G. Jüttner; H. Bergknoff; H. Bethe; K. Isler; L. D. Faddeev; L. D. Faddeev; M. Gaudin; M. Takahashi; Marko Kolanović; O. Babelon; P. Fendley; Predrag Prester; R. Orbach; S. Pallua; Silvio Pallua

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Violation of the string hypothesis and Heisenberg XXZ spin chain

Authors: A. Foerster
A. Foerster
A. Foerster
A. Luther
A. N. Kirillov
Amon Ilakovac
C. Destri
C. W. H. Lee
F. H. L. Essler
F. H. L. Essler
F. H. L. Essler
F. Woynarovich
G. Jüttner
H. Bergknoff
H. Bethe
K. Isler
L. D. Faddeev
L. D. Faddeev
M. Gaudin
M. Takahashi
Marko Kolanović
O. Babelon
P. Fendley
Predrag Prester
R. Orbach
S. Pallua
Silvio Pallua
Publication date: 14 July 1999
Publisher: 'American Physical Society (APS)'
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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 exact number of exceptions to the string conjecture and total number of solutions which is required for completeness.Comment: 15 pages, 7 Postscript figure

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