| HAL : ensl-00266557, version 1 |
| DOI : 10.1088/1742-5468/2005/09/L09002 |
| Fiche détaillée | Récupérer au format |
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| Journal of statistical mechanics-theory and experiment, L09002 (2005) L09002 |
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| Exact results for the sigma(z) two-point function of the XXZ chain Delta=1/2 |
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| N. Kitanine1Jean Michel Maillet2N. A. Slavnov3Véronique Terras2, 4 |
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| (2005) |
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| We propose a new multiple-integral representation for the correlation function [sigma(1)(z)sigma(m+1)(z)] of the XXZ spin-1/2 Heisenberg chain in the disordered regime. We show that for Delta = 1/2 the integrals can be separated and computed exactly. As an example we give the explicit results up to the lattice distance m = 8. It turns out that the answer is given as integer numbers divided by 2((m+1)2). |
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| Domaine | : | Physique/Physique mathématique Mathématiques/Physique mathématique Physique/Physique des Hautes Energies - Théorie |
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| Quantum integrable models – spin chain – Bethe ansatz – Correlation functions |
| ensl-00266557, version 1 | |
| http://hal-ens-lyon.archives-ouvertes.fr/ensl-00266557 | |
| oai:hal-ens-lyon.archives-ouvertes.fr:ensl-00266557 | |
| Contributeur : Jean Michel Maillet | |
| Soumis le : Lundi 24 Mars 2008, 22:12:29 | |
| Dernière modification le : Vendredi 25 Septembre 2009, 12:33:49 | |