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Numerical Approach for the Study of the Spin-1/2 XY Chains Dynamic Properties

Oleg Derzhko, Taras Krokhmalskii

Published Jul 1, 1998• 29 citations

Abstract

The paper presents a numerical approach for the calculation of thermodynamics and spin correlations for spin-½ XY chains. To illustrate the approach we performed exact finite-chain calculations of all time-dependent two-spin correlation functions for the spin-½ Ising chain in the transverse field. The computed correlation functions permit to evaluate the frequency-dependent susceptibilities and structure factors for this model. The obtained results are discussed in detail. They may have an application for the interpretation of dynamic experiments on quasi-one-dimensional crystals that can be treated within the frames of the spin-½ transverse Ising model.

DOI: 10.1002/(sici)1521-3951(199807)208:1<221::aid-pssb221>3.0.co;2-e

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