Kondo问题的多尺度纠缠重整化方法
Multiscale Entanglement Renormalization Ansatz for Kondo Problem
摘要:
本文导出了单杂质近藤模型的多尺度纠缠重整化模型。我们发现两种类型的隐藏的量子纠缠:一个来自于有限温度效应的几何形状的MERA网络,和其他代表屏蔽的杂质传导电子。当后者开始主导电子态时,近藤物理学就出现了。这个结果是边界共形场论的全息对偶的一个简单而漂亮的例子。
英文摘要:
We derive the multiscale entanglement renormalization ansatz (MERA) for the single impuity Kondo model. We find two types of hidden quantum entanglement: one comes from a finite-temperature effect on the geometry of the MERA network, and the other represents screening of the impurity by conduction electrons. As the latter starts to dominate the electronic state, the Kondo physics emerges. The present result is a simple and beautiful example of a holographic dual of a boundary conformal field theory.
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