We compare Taylor expansion and a modified variant of Taylor expansion, which incorporates features of the fugacity series, for expansions in the chemical potential around a zero-density lattice field theory. As a first test we apply both series to the cases of free fermions and free bosons. Convergence and other properties are analyzed.
@article{arxiv.1311.7436,
title = {A test of Taylor- and modified Taylor-expansion},
author = {Max Wilfling and Christof Gattringer},
journal= {arXiv preprint arXiv:1311.7436},
year = {2014}
}