Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-11-08
Phys.Rev.Lett. 85 (2000) 2446-2449
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, LaTeX, 3 tables; minor adjustments
Scientific paper
10.1103/PhysRevLett.85.2446
We propose a method for the resummation of divergent perturbative expansions in quantum electrodynamics and related field theories. The method is based on a nonlinear sequence transformation and uses as input data only the numerical values of a finite number of perturbative coefficients. The results obtained in this way are for alternating series superior to those obtained using Pad\'{e} approximants. The nonlinear sequence transformation fulfills an accuracy-through-order relation and can be used to predict perturbative coefficients. In many cases, these predictions are closer to available analytic results than predictions obtained using the Pad\'{e} method.
Becher Jacob
Jentschura Ulrich D.
Soff Gerhard
Weniger Ernst Joachim
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