TY  - CONF
A1  - Karsch, Frithjof
A1  - Schaefer, Bernd-Jochen
A1  - Wagner, Marc
A1  - Wambach, Jochen
T1  - Towards finite density QCD with Taylor expansions
T2  - Proceedings of Science
N2  - We analyze general convergence properties of the Taylor expansion of observables to finite chemical potential in the framework of an effective 2+1 flavor Polyakov-quark-meson model. To compute the required higher order coefficients a novel technique based on algorithmic differentiation has been developed. Results for thermodynamic observables as well as the phase structure obtained through the series expansion up to 24th order are compared to the full model solution at finite chemical potential. The available higher order coefficients also allow for resummations, e.g. Padé series, which improve the convergence behavior. In view of our results we discuss the prospects for locating the QCD phase boundary and a possible critical endpoint with the Taylor expansion method.
Y1  - 2012
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27482
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-274820
SN  - 1824-8039
N1  - XXIX International Symposium on Lattice Field Theory July 10-16, 2011 Squaw Valley, Lake Tahoe, California
VL  - 2011
IS  - (Lattice 2011)219
SP  - 1
EP  - 7
PB  - Scuola Internazionale Superiore di Studi Avanzati
CY  - Trieste
ER  -