Computation of dynamical correlation functions of Heisenberg chains in a field

Abstract : We compute the momentum- and frequency-dependent longitudinal spin structure factor for the one-dimensional spin-1/2 $XXZ$ Heisenberg spin chain in a magnetic field, using exact determinant representations for form factors on the lattice. Multiparticle contributions are computed numerically throughout the Brillouin zone, yielding saturation of the sum rule to high precision.
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Physical Review Letters, American Physical Society, 2005, 95 (077201), pp.077201. 〈10.1103/PhysRevLett.95.077201〉
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00266558
Contributeur : Jean Michel Maillet <>
Soumis le : lundi 24 mars 2008 - 22:17:44
Dernière modification le : jeudi 19 avril 2018 - 14:54:03

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J. -S. Caux, Jean Michel Maillet. Computation of dynamical correlation functions of Heisenberg chains in a field. Physical Review Letters, American Physical Society, 2005, 95 (077201), pp.077201. 〈10.1103/PhysRevLett.95.077201〉. 〈ensl-00266558〉

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