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Quantum and classical thermal correlations in the XY spin-1/2 chain

✍ Scribed by Maziero, J.; Guzman, H.; Céleri, L.; Sarandy, M.; Serra, R.


Book ID
111647460
Publisher
The American Physical Society
Year
2010
Tongue
English
Weight
644 KB
Volume
82
Category
Article
ISSN
1050-2947

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Spin dynamics of the quantum XY chain an
✍ M.E.S. Nunes; J.A. Plascak; J. Florencio 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 281 KB

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