The Bethe Ansatz

Anisotropic Heisenberg chain i.z.sc.xxz

\[ H_{XXZ} = J \sum_{j=1}^N \left[ S^x_j S^x_{j+1} + S^y_j S^y_{j+1} + \Delta (S^z_j S^z_{j+1} - 1/4) \right] \]



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Author: Jean-Sébastien Caux

Created: 2024-01-18 Thu 14:24