Superasymptotic and hyperasymptotic approximation to the operator product expansion

Superasymptotic and hyperasymptotic approximation to the operator product expansion
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算子乘积展开的超渐近和超渐近近似

DOI:
10.1103/physrevd.99.074019
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发表时间:
2019
期刊:
影响因子:
5
通讯作者:
A. Pineda
A. Pineda
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
C. Ayala;Xabier Lobregat;A. Pineda

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给定一个可观察的和它的算子乘积展开(OPE),我们提出的表达式,仔细解开截断的总和的扰动系列的幂$\alpha$的非微扰(NP)的校正。这种分离是以NP幂精度完成的。实现分裂的解析控制,并且沿着超级/超渐近展开沿着进行不同项的组织。作为一个测试,我们应用的方法,静态电位在大$\beta_0$近似。我们看到了可观测量的超渐近和超渐近结构。
Given an observable and its operator product expansion (OPE), we present expressions that carefully disentangle truncated sums of the perturbative series in powers of $\alpha$ from the non-perturbative (NP) corrections. This splitting is done with NP power accuracy. Analytic control of the splitting is achieved and the organization of the different terms is done along an super/hyper-asymptotic expansion. As a test we apply the methods to the static potential in the large $\beta_0$ approximation. We see the superasymptotic and hyperasymptotic structure of the observable in full glory.
QCD 中的重正子
DOI: --
发表时间: 2022
期刊:
影响因子: --
作者:
戸田恭輔;小西直磨;内藤貫太;奥谷昌之;Yukinari Sumino
通讯作者: Yukinari Sumino