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arXiv 2104.00593hep-thmath-phmath.MP
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六维扰动Hopf代数Dyson-Schwinger方程的半经典反级数:$ϕ^3$ QFT

Semiclassical Trans-Series from the Perturbative Hopf-Algebraic Dyson-Schwinger Equations: $ϕ^3$ QFT in 6 Dimensions

Michael Borinsky, Gerald V. Dunne, Max Meynig

摘要:

我们分析了6维渐近自由无质量标量$ϕ^3$量子场论,利用复苏渐近分析找到了反级数解,这些解使反常维数下的Kreimer-Connes Hopf-代数Dyson-Schwinger方程的发散微扰解非微扰完备化.这个标量共形场论是渐近自由的,并且有一个实的Lipatov瞬子。在霍普夫代数的方法,我们发现一个反系列具有复杂的博雷尔奇点结构,有三个不同的,但共振非微扰项,每个重复在一个无限系列。这些展开式是根据重整化耦合。共振结构导致幂对数项在较高水平的反级数,类似于对数项之间的相互作用所产生的瞬子和反瞬子,但产生于一个纯粹的微扰形式主义,而不是从一个半经典的分析。

英文摘要:

We analyze the asymptotically free massless scalar $ϕ^3$ quantum field theory in 6 dimensions, using resurgent asymptotic analysis to find the trans-series solutions which yield the non-perturbative completion of the divergent perturbative solutions to the Kreimer-Connes Hopf-algebraic Dyson-Schwinger equations for the anomalous dimension. This scalar conformal field theory is asymptotically free and has a real Lipatov instanton. In the Hopf-algebraic approach we find a trans-series having an intricate Borel singularity structure, with three distinct but resonant non-perturbative terms, each repeated in an infinite series. These expansions are in terms of the renormalized coupling. The resonant structure leads to powers of logarithmic terms at higher levels of the trans-series, analogous to logarithmic terms arising from interactions between instantons and anti-instantons, but arising from a purely perturbative formalism rather than from a semi-classical analysis.

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