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arXiv · 1009.5211

Towards finite density QCD with Taylor expansions

Frithjof Karsch·Bernd-Jochen Schaefer·Mathias Wagner·Jochen Wambach
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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.

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Frithjof Karsch, Bernd-Jochen Schaefer, Mathias Wagner, Jochen Wambach. 2010-09-27. Towards finite density QCD with Taylor expansions. https://doi.org/10.1016/j.physletb.2011.03.013

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