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arXiv 2202.01513hep-thmath-phmath.CAmath.MP
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量子场论中的共振复苏渐近性

Resonant resurgent asymptotics from quantum field theory

Michael Borinsky, David Broadhurst

摘要:

我们进行了一个量子场论renormalon的所有订单复苏分析,有助于在六维标量$ϕ^3$理论的异常尺寸,是由一个三阶非线性微分方程。我们增加了阶乘发散微扰膨胀与renormalon的渐近展开到所有的瞬子订单,在一个aptured和良好的测试公式。这种重正子奇异性的一个显著特征是对数项的出现,从反式序列的第二瞬子阶开始。为了突出这一点,并说明我们的方法,我们还分析了一个密切相关的二阶非线性微分方程,表现出类似的共振结构,但缺乏对数的贡献的反式系列。

英文摘要:

We perform an all-order resurgence analysis of a quantum field theory renormalon that contributes to an anomalous dimension in six-dimensional scalar $ϕ^3$ theory and is governed by a third-order nonlinear differential equation. We augment the factorially divergent perturbative expansion associated to the renormalon by asymptotic expansions to all instanton orders, in a conjectured and well-tested formula. A distinctive feature of this renormalon singularity is the appearance of logarithmic terms, starting at second-instanton order in the trans-series. To highlight this and to illustrate our methods, we also analyze the trans-series for a closely related second-order nonlinear differential equation that exhibits a similarly resonant structure but lacks logarithmic contributions.

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