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arXiv 1708.00880quant-phcond-mat.str-el
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矩阵乘积状态的连续极限

Continuum limits of Matrix Product States

Gemma De las Cuevas, Norbert Schuch, David Perez-Garcia, J. Ignacio Cirac

摘要:

我们确定哪些矩阵不变的产品状态有一个连续极限,也就是说,可以被认为是在连续定义的状态的离散化版本。为此,我们分析了实空间中的细粒度重正化过程,计算了其流的极限态集,发现它严格包含连续矩阵乘积态集。我们还分析了哪些状态有一个连续极限后,有限数量的粗粒化重整化步骤。我们给出了几个有和没有不同种类的连续极限的状态的例子。

英文摘要:

We determine which translationally invariant matrix product states have a continuum limit, that is, which can be considered as discretized versions of states defined in the continuum. To do this, we analyse a fine-graining renormalization procedure in real space, characterise the set of limiting states of its flow, and find that it strictly contains the set of continuous matrix product states. We also analyse which states have a continuum limit after a finite number of a coarse-graining renormalization steps. We give several examples of states with and without the different kinds of continuum limits.

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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