Journal Article

FZJ-2015-03406

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Is there still any T c mystery in lattice QCD? Results with physical masses in the continuum limit III

Borsányi, S. ; Fodor, Z. (Corresponding Author) ; Hoelbling, C. ; Katz, S. D. ; Krieg, S.FZJ* ; Ratti, C. ; Szabó, K. K.

2010
Springer Berlin

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Please use a persistent id in citations: http://hdl.handle.net/2128/8771  doi:10.1007/JHEP09(2010)073

Abstract: The present paper concludes our investigations on the QCD cross-over transition temperatures with 2+1 staggered flavours and one-link stout improvement. 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. The new results on this broad cross-over are in complete agreement with our earlier ones. We compare our findings with the published results of the hotQCD collaboration. 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. The findings of the hotQCD collaboration can be recovered by using a distorted spectrum which takes into account lattice discretization artifacts and heavier than physical quark masses. This analysis provides a simple explanation for the observed discrepancy in the transition temperatures between our and the hotQCD collaborations.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 411 - Computational Science and Mathematical Methods (POF2-411) (POF2-411)

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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