Integral representations for correlation functions of the XXZ chain at finite temperature

Details Integral representations for correlation functions of the XXZ chain at finite temperature Integral representations for correlation functions of the XXZ chain at finite temperature

2004-05-10

arxiv.org/abs/hep-th/0405089v2

J.Phys. A37 (2004) 7625-7652

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, 2 figures, v2: 2 typos corrected, 1 figure added

Scientific paper

10.1088/0305-4470/37/31/001

We derive a novel multiple integral representation for a generating function
of the $\s^z$-$\s^z$ correlation functions of the spin-$\2$ XXZ chain at finite
temperature and finite, longitudinal magnetic field. Our work combines
algebraic Bethe ansatz techniques for the calculation of matrix elements with
the quantum transfer matrix approach to thermodynamics.

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