Accurate critical exponents from the optimal truncation of the $$\varepsilon $$ ε -expansion within the O(N)-symmetric field theory for large N

Abstract The perturbation series for the renormalization group functions of the O(N)-symmetric $$\phi ^4$$ ϕ 4 field theory are divergent but asymptotic. They are usually followed by Resummation calculations to extract reliable results. Although the same features exist for QED series, their partial...

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Bibliographic Details
Main Author: Abouzeid M. Shalaby
Format: Article
Language:English
Published: SpringerOpen 2025-07-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-025-14473-7
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