04 05 08 9 v 1 1 0 M ay 2 00 4 Integral representations for correlation functions of the XXZ chain at finite temperature

  title={04 05 08 9 v 1 1 0 M ay 2 00 4 Integral representations for correlation functions of the XXZ chain at finite temperature},
  author={Frank G{\"o}hmann and Andreas Kl{\"u}mper and Alexander Seel},
We derive a novel multiple integral representation for a gen erating function of theσz-σz correlation functions of the spin1 2 XXZ chain at finite temperature and finite, longitudinal magnetic field. Our wor k combines algebraic Bethe ansatz techniques for the calculation of ma trix elements with the quantum transfer matrix approach to thermodynamic s. PACS: 05.30.-d, 75.10.Pq †e-mail: goehmann@physik.uni-wuppertal.de ∗e-mail: kluemper@physik.uni-wuppertal.de ‡e-mail: seel@physik.uni-wuppertal… CONTINUE READING
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