Recent results on QCD thermodynamics: lattice QCD versus Hadron Resonance Gas model |
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| Authors: | Claudia Ratti,Szabolcs Borsá nyi,Zoltá n Fodor,Christian Hoelbling,Sá ndor D. Katz,Stefan Krieg,Ká lmá n K. Szabó |
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| Affiliation: | 1. Department of Physics, University of Wuppertal, Gaußstr. 20, Germany;2. Forschungszentrum Jülich, Jülich, D-52425, Germany;3. Institute for Theoretical Physics, Eötvös University, Pázmány 1, H-1117 Budapest, Hungary;4. Center for Theoretical Physics, MIT, Cambridge, MA 02139-4307, USA;5. Dipartimento di Fisica Teorica, Universitá degli Studi di Torino, via Giuria 1, 10125 Torino, Italy |
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| Abstract: | We present our most recent investigations on the QCD cross-over transition temperatures with 2+1 staggered flavours and one-link stout improvement [JHEP 1009:073, 2010]. We extend our previous two studies [Phys. Lett. B643 (2006) 46, JHEP 0906:088 (2009)] by choosing even finer lattices (Nt=16) and we work again with physical quark masses. All these results are confronted with the predictions of the Hadron Resonance Gas model and Chiral Perturbation Theory for temperatures below the transition region. Our results can be reproduced by using the physical spectrum in these analytic calculations. A comparison with the results of the hotQCD collaboration is also discussed. |
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| Keywords: | quark-gluon plasma QCD thermodynamics lattice QCD |
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