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Quantum Effects and Critical Behavior in Low-Dimensional Spin-1/2 Systems

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Kamieniarz G., Musial G., Dębski L., Bieliński M., Dekeyser R.
Acta Physica Polonica A
|
1997
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vol. 92
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issue 2
445-447
EN
The critical coupling and spontaneous magnetization curve for the 2D-Ising model are calculated using the effective-field method with correlations. An application of the method to the quantum S=1/2 1D-Heisenberg model is presented and reliable low-temperature estimates of the specific heat are evaluated.
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