Low-Temperature Expansions of the XXZ Heisenberg Model.

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  • Mizuta Hideyuki
    Department of Physics, Graduate School of Science, University of Tokyo, Hongo 7–3–1, Bunkyo–ku, Tokyo 113
  • Wadati Miki
    Department of Physics, Graduate School of Science, University of Tokyo, Hongo 7–3–1, Bunkyo–ku, Tokyo 113

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Other Title
  • Low-Temperature Expansions of the XXZ H
Published
1997
DOI
  • 10.1143/jpsj.66.3741
Publisher
THE PHYSICAL SOCIETY OF JAPAN

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Description

Thermodynamic quantities of solvable models such as one--dimensionalHeisenberg model can be obtained through the Finite temperature Baxterformula. For the low--temperature expansions, the estimate of the finitesize corrections by use of the Euler--Maclaurin formula is essential.There has been a question on the convergence of such calculations.In this paper, we confirm that the Euler--Maclaurin formula gives the correctlow--temperature expansion of the free energy for the XXZ Heisenberg model.

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