Thermal Entanglement in Ferrimagnetic Chains
Quantum Physics
2009-11-13 v1
Abstract
A formula to evaluate the entanglement in an one-dimensional ferrimagnetic system is derived. Based on the formula, we find that the thermal entanglement in a small size spin-1/2 and spin-s ferrimagnetic chain is rather robust against temperature, and the threshold temperature may be arbitrarily high when s is sufficiently large. This intriguing result answers unambiguously a fundamental question: ``can entanglement and quantum behavior in physical systems survive at arbitrary high temperatures?"
Cite
@article{arxiv.quant-ph/0604099,
title = {Thermal Entanglement in Ferrimagnetic Chains},
author = {Xiaoguang Wang and Z. D. Wang},
journal= {arXiv preprint arXiv:quant-ph/0604099},
year = {2009}
}
Comments
4 pages, 3 figures