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Dynamical correlation functions of the XXZ model at finite temperature

Kazumitsu Sakai
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Abstract

Combining a lattice path integral formulation for thermodynamics with the solution of the quantum inverse scattering problem for local spin operators, we derive a multiple integral representation for the time-dependent longitudinal correlation function of the spin-1/2 Heisenberg XXZ chain at finite temperature and in an external magnetic field. Our formula reproduces the previous results in the following three limits: the static, the zero-temperature and the XY limits.

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Kazumitsu Sakai. 2007-07-02. Dynamical correlation functions of the XXZ model at finite temperature. https://doi.org/10.1088/1751-8113%2F40%2F27%2F007

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