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Journal articles
Master equation for spin-spin correlation functions of the XXZ chain
Abstract : We derive a new representation for spin-spin correlation functions of the finite XXZ spin-1/2 Heisenberg chain in terms of a single multiple integral, that we call the master equation. Evaluation of this master equation gives rise on the one hand to the previously obtained multiple integral formulas for the spin-spin correlation functions and on the other hand to their expansion in terms of the form factors of the local spin operators. Hence, it provides a direct analytic link between these two representations of the correlation functions and a complete re-summation of the corresponding series. The master equation method also allows one to obtain multiple integral representations for dynamical correlation functions.
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00266563
Contributor : Jean Michel Maillet Connect in order to contact the contributor
Submitted on : Monday, March 24, 2008 - 10:43:23 PM
Last modification on : Monday, January 25, 2021 - 2:38:02 PM
Contributor : Jean Michel Maillet Connect in order to contact the contributor
Submitted on : Monday, March 24, 2008 - 10:43:23 PM
Last modification on : Monday, January 25, 2021 - 2:38:02 PM
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