Correlation functions of the integrable isotropic spin-1 chain at finite temperature
arXiv:1008.4440 · doi:10.1088/1742-5468/2010/11/P11011
Abstract
We represent the density matrix of a finite segment of the integrable isotropic spin-1 chain in the thermodynamic limit as a multiple integral. Our integral formula is valid at finite temperature and also includes a homogeneous magnetic field.
43 pages, Latex, v2: typos corrected, v3: section on zero temperature limit enlarged
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