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arXiv quant-ph/0202029quant-phcond-mat.str-el
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量子相变附近纠缠的标度

Scaling of Entanglement close to a Quantum Phase Transitions

A. Osterloh, L. Amico, G. Falci, R. Fazio

摘要:

本文通过分析一类一维精确可解模型的纠缠度性质,讨论了量子相变附近的纠缠。我们发现纠缠可以在标度理论的框架下进行分类。此外,我们揭示了经典关联和非局域量子关联之间的深刻区别,纠缠:相关长度在相变发散,而纠缠一般保持短程。

英文摘要:

In this Letter we discuss the entanglement near a quantum phase transition by analyzing the properties of the concurrence for a class of exactly solvable models in one dimension. We find that entanglement can be classified in the framework of scaling theory. Further, we reveal a profound difference between classical correlations and the non-local quantum correlation, entanglement: the correlation length diverges at the phase transition, whereas entanglement in general remains short ranged.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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