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# 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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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00266558
Contributor : Jean Michel Maillet Connect in order to contact the contributor
Submitted on : Monday, March 24, 2008 - 10:17:44 PM
Last modification on : Friday, November 13, 2020 - 3:28:04 PM

### Citation

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

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