Quark number susceptibilities: lattice QCD versus PNJL model

Claudia Ratti; Simon Roessner; Wolfram Weise

Quark number susceptibilities: lattice QCD versus PNJL model

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arxiv hep-ph/0701091 v1 pith:WXRBGFZ5 submitted 2007-01-11 hep-ph

Claudia Ratti , Simon Roessner , Wolfram Weise This is my paper

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keywords pnjlmodelquarktaylorchemicalcomparisonexpansionlattice

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Quark number susceptibilities at finite quark chemical potential are investigated in the framework of the Polyakov-loop-extended Nambu Jona-Lasinio (PNJL) model. A detailed comparison is performed between the available lattice data, extrapolated using a Taylor expansion around vanishing chemical potential, and PNJL results consistently obtained from a Taylor series truncated at the same order. The validity of the Taylor expansion is then examined through a comparison between the full and truncated PNJL model calculations.

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