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The exact phase diagram of the quantumXY spin glass model in a transverse field

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Zeitschrift für Physik B Condensed Matter

Abstract

The infinite rangeXY spin glass model in a transverse field is investigated by means of the Trotter-Suzuki approach. The exact phase diagram is obtained showing that a spin glass transition takes place for non-zero values of the transverse field γ up to a critical value γ c =1.44α0.01. The present numerically exact calculations are in good agreement with our previous approximate results and they clear remaining discrepancies from previous work.

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Authors and Affiliations

  1. Theoretische Tieftemperaturphysik and Sonderforschungsbereich 166 der Universität, Lotharstrasse 1, W-4100, Duisburg 1, Germany

    G. Büttner & K. D. Usadel

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  1. G. Büttner
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  2. K. D. Usadel
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Büttner, G., Usadel, K.D. The exact phase diagram of the quantumXY spin glass model in a transverse field. Z. Physik B - Condensed Matter 83, 131–134 (1991). https://doi.org/10.1007/BF01314407

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  • DOI: https://doi.org/10.1007/BF01314407

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