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Time correlations in quantum spin chains and the X-ray absorption problem

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Zeitschrift für Physik B Condensed Matter

Abstract

We study the isotropic spin one-half XY-chain with one arbitrarily modified coupling. The transverse auto-correlation functions of the spin at the modified bond are considered atT=0 and their asymptotic time dependence is determined. The results are applied to other one- and two-dimensional problems.

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Authors and Affiliations

  1. Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-1000, Berlin 33, Germany

    I. Peschel & K. D. Schotte

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  1. I. Peschel
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  2. K. D. Schotte
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Peschel, I., Schotte, K.D. Time correlations in quantum spin chains and the X-ray absorption problem. Z. Physik B - Condensed Matter 54, 305–311 (1984). https://doi.org/10.1007/BF01485827

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  • DOI: https://doi.org/10.1007/BF01485827

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