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Random and aperiodic quantum spin chains: A comparative study

✍ Scribed by F. Iglói; D. Karevski; H. Rieger


Publisher
Springer
Year
1998
Tongue
English
Weight
290 KB
Volume
1
Category
Article
ISSN
1434-6036

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We investigate the Hamiltonian dynamics of two low-dimensional quantum spin systems in a random ÿeld, at the inÿnite-temperature limit: the XY chain and the two-leg XY ladder with interchain Ising interactions. We determine the longitudinal spin autocorrelation functions of the spin-1 2 XY chain and