Andreas Klümper and Kazumitsu Sakai 2002 J. Phys. A: Math. Gen. 35 2173 doi:10.1088/0305-4470/35/9/307
The thermal conductivity of the spin-½ XXZ chain at arbitrary temperature
Andreas Klümper and Kazumitsu Sakai
Show affiliationsMotivated by recent investigations of transport properties of strongly correlated 1D models and thermal conductivity measurements of quasi 1D magnetic systems, we present results for the integrable spin-½ XXZ chain. The thermal conductivity κ(ω) of this model has 
κ(ω) = 
δ(ω), i.e. it is infinite for zero frequency ω. The weight of the delta peak is calculated exactly by a lattice path integral formulation. Numerical results for wide ranges of temperature and anisotropy are presented. The low- and high-temperature limits are studied analytically.
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Issue 9 (8 March 2002)
Received 3 January 2002
Published 22 February 2002
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The thermal conductivity of the spin-½ XXZ chain at arbitrary temperature
Andreas Klümper and Kazumitsu Sakai 2002 J. Phys. A: Math. Gen. 35 2173
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