摘要翻译:
我们研究了一维各向异性XY模型的多自旋纠缠,集中于最简单的三自旋纠缠情况。与两两纠缠相比,三方量子关联具有更长的范围,对温度的增加也更稳健。在零温度和有限温度下,我们找到了系统相图中发生束缚纠缠的区域。通过调谐磁场可以获得基态的束缚纠缠。由于温度对自由基态纠缠的影响,热束缚纠缠自然出现。
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英文标题:
《Bound entanglement in the XY model》
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作者:
D. Patan\'e, R. Fazio, L. Amico
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Quantum Physics 量子物理学
分类描述:Description coming soon
描述即将到来
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
We study the multi-spin entanglement for the 1D anisotropic XY model concentrating on the simplest case of three-spin entanglement. As compared to the pairwise entanglement, three-party quantum correlations have a longer range and they are more robust on increasing the temperature. We find regions of the phase diagram of the system where bound entanglement occurs, both at zero and finite temperature. Bound entanglement in the ground state can be obtained by tuning the magnetic field. Thermal bound entanglement emerges naturally due to the effect of temperature on the free ground state entanglement.
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PDF链接:
https://arxiv.org/pdf/705.0386