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FINE-STRUCTURE OF THE BETHE ANSATZ FOR THE SPIN-1/2 HEISENBERG X X X MODEL

Abstract:

We analyse the Bethe ansalz equations for the two-particle sector of the spin-1/2 Heisenberg XXX model on a one-dimensional lattice of length N. We show that. beginning at a critical lattice length of N = 21.86. new pairs of real solutions develop, whereas complex solutions start to disappear. The integers (that appear in the logarithmic form of the Bethe equations) of the new solutions do not fit into the conventional classification scheme. The total number of solutions in the two-particle s...

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Publication status:
Published

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Publisher copy:
10.1088/0305-4470/25/15/019
Journal:
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL More from this journal
Volume:
25
Issue:
15
Pages:
4115-4126
Publication date:
1992-08-07
DOI:
EISSN:
1361-6447
ISSN:
0305-4470
Language:
English
Pubs id:
pubs:199383
UUID:
uuid:24200bc5-566d-415a-a2ad-95c1412186d1
Local pid:
pubs:199383
Source identifiers:
199383
Deposit date:
2012-12-19

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