XX and Ising limits in integral formulae for finite temperature correlation functions of the XXZ chain
نویسندگان
چکیده
We consider a multiple integral representation for a one-parameter generating function of the finite temperature Sz-Sz 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. PACS: 05.30.-d, 75.10.Pq †e-mail: [email protected] ‡e-mail: [email protected] 2
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