Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling Strength

Details Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling Strength Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling Strength

2003-11-21

arxiv.org/abs/quant-ph/0311146v2

J. Phys. A: Math. Gen. 37 (2004) 11475-11483

Physics

Quantum Physics

10 pages and 2 figures, published version

Scientific paper

10.1088/0305-4470/37/47/016

We show that the generalized Bell inequality is violated in the extended
Heisenberg model when the temperature is below a threshold value. The threshold
temperature values are obtained by constructing exact solutions of the model
using the temperature-dependent correlation functions. The effect due to the
presence of external magnetic field is also illustrated.

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