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XX and Ising limits in integral formulae for finite temperature correlation functions of the XXZ chain

arXiv:hep-th/0505091 · doi:10.1007/s11232-006-0012-x

Abstract

We consider a multiple integral representation for a one-parameter generating function of the finite temperature - correlation functions of the antiferromagnetic spin-1/2 XXZ chain in the XX limit and in the Ising limit. We show how in these limits the multiple integrals reduce to single integrals, thereby reproducing known results.

16 pages, Contribution to the proceedings of the International Workshop on Classical and Quantum Integrable Systems, Dubna, January 24-28, 2005

XX and Ising limits in integral formulae for finite temperature correlation functions of the XXZ chain · wovepaper