Recent results on QCD thermodynamics: lattice QCD versus Hadron Resonance Gas model

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 ( N t = 16 )...

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Published inNuclear physics. A Vol. 855; no. 1; pp. 253 - 256
Main Authors Ratti, Claudia, Borsányi, Szabolcs, Fodor, Zoltán, Hoelbling, Christian, Katz, Sándor D., Krieg, Stefan, Szabó, Kálmán K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2011
Subjects
lattice QCD
QCD thermodynamics
quark-gluon plasma
quark-gluon plasma
QCD thermodynamics
lattice QCD
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Summary: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 ( N t = 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.
ISSN:0375-9474
DOI:10.1016/j.nuclphysa.2011.02.052