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String correlation functions of the spin-1/2 Heisenberg XXZ chain

Michael Bortz·Jun Sato·Masahiro Shiroishi
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Abstract

We calculate certain string correlation functions, originally introduced as order parameters in integer spin chains, for the spin-1/2 XXZ Heisenberg chain at zero temperature and in the thermodynamic limit. For small distances, we obtain exact results from Bethe Ansatz and exact diagonalization, whereas in the large-distance limit, field-theoretical arguments yield an asymptotic algebraic decay. We also make contact with two-point spin-correlation functions in the asymptotic limit.

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Michael Bortz, Jun Sato, Masahiro Shiroishi. 2007-02-16. String correlation functions of the spin-1/2 Heisenberg XXZ chain. https://doi.org/10.1088/1751-8113%2F40%2F16%2F001

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