Title

Improvement of the derivative expansion

Document Type

Article

Publication Date

1-1-1988

Abstract

We propose an algebraic method to improve the convergence of the derivative expansion. This method, originally designed to improve the convergence of the derivative expansion of the two-dimensional 4 field theory, can easily be adopted for field theory in any dimension. While this method may appear to be far from mathematically rigorous and unique, and the example seems to be unrealistic, it opens up the possibility that a clever technique with proper analytic continuation can turn the derivative expansion into a useful tool in studying effective low-energy phenomenology. © 1988 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review D

First Page

3739

Last Page

3746

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