Addendum to paper: Strong-Coupling Behavior of $\phi^4$-Theories and Critical Exponents [Phys. Rev. D 57, 2264 (1998)]

TL;DR

This paper improves the graphical extrapolation method used in variational perturbation theory to more accurately calculate critical exponents of three-dimensional $\,\phi^4$-theories at infinite couplings.

Contribution

It introduces a new plotting technique that enhances the extrapolation process in variational perturbation theory for critical exponent calculations.

Findings

Enhanced accuracy in critical exponent estimation.

Better convergence of variational perturbation series.

Improved graphical extrapolation method.

Abstract

The graphical extrapolation procedure to infinite order of variational perturbation theory in a recent calculation of critical exponents of three-dimensional $\phi^4$-theories at infinite couplings is improved by another way of plotting the results.