Fifth-neighbor spin-spin correlator for the anti-ferromagnetic Heisenberg chain
Jun Sato, Masahiro Shiroishi
Abstract
We study the generating function of the spin-spin correlation functions in the ground state of the anti-ferromagnetic spin-1/2 Heisenberg chain without magnetic field. We have found its fundamental functional relations from those for general correlation functions, which originate in the quantum Knizhink-Zamolodchikov equation. Using these relations, we have calculated the explicit form of the generating functions up to n=6. Accordingly we could obtain the spin-spin correlator <Sjz Sj+kz> up to k=5.
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