Systematic Resummed Perturbation Theory
Christof Wetterich
TL;DR
This paper introduces a systematic loop expansion method using full propagators and vertices, derived from an exact non-perturbative flow equation, to improve perturbative calculations.
Contribution
It presents a novel systematic resummed perturbation theory framework based on flow equations and full propagators, advancing beyond traditional perturbative approaches.
Findings
Developed a new loop expansion scheme
Derived from an exact non-perturbative flow equation
Provides a more comprehensive perturbative analysis
Abstract
A systematic loop expansion is formulated in terms of full propagators and vertices. It is based on an expansion of the general solution of an exact non-perturbative flow equation.
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