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2011

Towards finite density QCD with Taylor expansions

Karsch, Frithjof, Schaefer, Bernd-Jochen, Wagner, Mathias et al.

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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.

Towards finite density QCD with Taylor expansions · Around

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