Quark number susceptibilities: Lattice QCD versus PNJL model |
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| Authors: | C. Ratti,S. Rö ß ner,W. Weise |
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| Affiliation: | 1. ECT ∗, I-38050 Villazzano (Trento), Italy;2. INFN, Gruppo Collegato di Trento, via Sommarive, I-38050 Povo (Trento), Italy;3. Physik-Department, Technische Universität München, D-85747 Garching, Germany |
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| Abstract: | 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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