FINE-STRUCTURE OF THE BETHE ANSATZ FOR THE SPIN-1/2 HEISENBERG X X X MODEL
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 i...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1992
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