Towards finite density QCD with Taylor expansions
Abstract
Convergence properties of Taylor expansions of observables, which are also used in lattice QCD calculations at non-zero chemical potential, are analyzed in an effective N_f = 2+1 flavor Polyakov-quark-meson model. A recently developed algorithmic technique allows the calculation of higher-order Taylor expansion coefficients in functional approaches. This novel technique is for the first time applied to an effective N_f = 2+1 flavor Polyakov-quark-meson model and the findings are compared with the full model solution at finite densities. The results are used to discuss prospects for locating the QCD phase boundary and a possible critical endpoint in the phase diagram.
Keywords
Cite
@article{arxiv.1009.5211,
title = {Towards finite density QCD with Taylor expansions},
author = {Frithjof Karsch and Bernd-Jochen Schaefer and Mathias Wagner and Jochen Wambach},
journal= {arXiv preprint arXiv:1009.5211},
year = {2011}
}
Comments
11 pages, 6 figures; minor clarifying changes, version to be published in Phys. Lett. B