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arXiv 0705.2024quant-phcond-mat.str-elmath-phmath.MP
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一维量子系统的面积律

An Area Law for One Dimensional Quantum Systems

M. B. Hastings

摘要:

证明了带隙一维量子系统中纠缠熵的面积律。熵的约束增长令人惊讶地迅速与相关长度,我们讨论这方面的量子膨胀剂的性质,并提出了一个猜想完全积极的地图,这可能提供了一种替代的方式到达面积法。我们还表明,对于带隙的局部系统,冯诺伊曼熵的界意味着一个足够大的$α<1$的雷尼熵的界,并意味着有能力近似的基态的矩阵乘积状态。

英文摘要:

We prove an area law for the entanglement entropy in gapped one dimensional quantum systems. The bound on the entropy grows surprisingly rapidly with the correlation length; we discuss this in terms of properties of quantum expanders and present a conjecture on completely positive maps which may provide an alternate way of arriving at an area law. We also show that, for gapped, local systems, the bound on Von Neumann entropy implies a bound on Rényi entropy for sufficiently large $α<1$ and implies the ability to approximate the ground state by a matrix product state.

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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