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Random Bonds and Topological Stability in Gapped Quantum Spin Chains

✍ Scribed by Hyman, R. A.; Yang, Kun; Bhatt, R. N.; Girvin, S. M.


Book ID
121478991
Publisher
The American Physical Society
Year
1996
Tongue
English
Weight
141 KB
Volume
76
Category
Article
ISSN
0031-9007

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We investigate the Hamiltonian dynamics of two low-dimensional quantum spin systems in a random ΓΏeld, at the inΓΏnite-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