An All-Orders Derivative Expansion
High Energy Physics - Theory
2011-04-15 v1
Abstract
We evaluate the exact effective action for fermions in the presence of a family of static but spatially inhomogeneous magnetic field profiles. This exact result yields an all-orders derivative expansion of the effective action, and indicates that the derivative expansion is an asymptotic, rather than a convergent, expansion.
Keywords
Cite
@article{arxiv.hep-th/9611019,
title = {An All-Orders Derivative Expansion},
author = {Gerald Dunne},
journal= {arXiv preprint arXiv:hep-th/9611019},
year = {2011}
}
Comments
9pp LaTeX; Talk at Telluride Workshop on Low Dimensional Field Theory