Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling Strength
Quantum Physics
2009-11-10 v2
Abstract
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.
Keywords
Cite
@article{arxiv.quant-ph/0311146,
title = {Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling Strength},
author = {Chunfeng Wu and Jing-Ling Chen and D. M. Tong and L. C. Kwek and C. H. Oh},
journal= {arXiv preprint arXiv:quant-ph/0311146},
year = {2009}
}
Comments
10 pages and 2 figures, published version