Superasymptotic and hyperasymptotic approximation to the operator product expansion
Superasymptotic and hyperasymptotic approximation to the operator product expansion
复制标题
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
影响因子:
5
通讯作者:
A. Pineda
中科院分区:
文献类型:
--
作者:
C. Ayala;Xabier Lobregat;A. Pineda
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.
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