Renormalization of lattice field theories with infinite-range wavelets

Renormalization of lattice field theories with infinite-range wavelets
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无限范围小波晶格场论的重整化

DOI:
10.1088/1742-5468/ab14d8
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发表时间:
2019
期刊:
Journal of Statistical Mechanics: Theory and Experiment
影响因子:
--
通讯作者:
H. Hinrichsen
H. Hinrichsen
中科院分区:
--
文献类型:
--
作者:
P. Fries;I. Reyes;J. Erdmenger;H. Hinrichsen

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我们提出了一种新的精确重整化方法,用于量子晶格模型,从而实现长程相互作用。重整化方案基于具有无限支持的小波,使得固定点处的激发谱与相关短程连续介质模型的谱在低于晶格间距所施加的上限截止的能量范围内一致。因此,共形谱塔在晶格上精确地实现了一定的能量尺度。我们通过将其应用于 1+1 维的自由玻色子和自由费米子以及伊辛模型来举例说明我们的方法。该分析也受到 AdS/CFT 对应的张量网络方法的推动,因为我们的结果可能有助于全息对偶的定性新构造,与之前基于有限范围小波的方法互补。
We present a new exact renormalization approach for quantum lattice models leading to long-range interactions. The renormalization scheme is based on wavelets with an infinite support in such a way that the excitation spectrum at the fixed point coincides with the spectrum of the associated short-range continuum model in an energy range below an upper cutoff imposed by the lattice spacing. As a consequence, the conformal towers of spectrum are exactly realized on the lattice up to a certain energy scale. We exemplify our approach by applying it to free bosons and to free fermions in 1+ 1 dimensions, as well as to the Ising model. The analysis is also motivated by tensor network approaches to the AdS/CFT correspondence since our results may be useful for a qualitatively new construction of holographic duals complementary to previous approaches based on finite-range wavelets.
DOI: --
发表时间: 1986
影响因子: 8.6
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