TY - JOUR
T1 - The QCD phase diagram from analytic continuation
AU - Bellwied, R.
AU - Borsanyi, S.
AU - Fodor, Z.
AU - Günther, J.
AU - Katz, S. D.
AU - Ratti, C.
AU - Szabo, K. K.
N1 - Funding Information:
The authors thank G. Endrodi for his valuable comments and suggestions. This project was funded by the DFG grant SFB/TR55 . S.D. Katz is funded by the “Lendület” program of the Hungarian Academy of Sciences ( LP2012-44/2012 ). The work of R. Bellwied is supported through DOE grant DEFG02-07ER41521 . C. Ratti is supported by the National Science Foundation through grant number NSF PHY-1513864 . An award of computer time was provided by the INCITE program. This research used resources of the Argonne Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract DE-AC02-06CH11357 . This research also used resources of the PRACE Research Infrastructure resource JUQUEEN at FZ-Jülich, Germany; JUQUEEN as large scale project of the Gauss Centre for Supercomputing (GCS); the QPACE machine supported by the Deutsche Forschungsgesellschaft through the research program SFB TR55; and the GPU cluster at the Wuppertal University.
Publisher Copyright:
© 2015 The Authors.
PY - 2015/12/17
Y1 - 2015/12/17
N2 - We present the crossover line between the quark gluon plasma and the hadron gas phases for small real chemical potentials. First we determine the effect of imaginary values of the chemical potential on the transition temperature using lattice QCD simulations. Then we use various formulas to perform an analytic continuation to real values of the baryo-chemical potential. Our data set maintains strangeness neutrality to match the conditions of heavy ion physics. The systematic errors are under control up to μB ≈ 300 MeV. For the curvature of the transition line we find that there is an approximate agreement between values from three different observables: the chiral susceptibility, chiral condensate and strange quark susceptibility. The continuum extrapolation is based on Nt=10, 12 and 16 lattices. By combining the analysis for these three observables we find, for the curvature, the value κ = 0.0149±0.0021.
AB - We present the crossover line between the quark gluon plasma and the hadron gas phases for small real chemical potentials. First we determine the effect of imaginary values of the chemical potential on the transition temperature using lattice QCD simulations. Then we use various formulas to perform an analytic continuation to real values of the baryo-chemical potential. Our data set maintains strangeness neutrality to match the conditions of heavy ion physics. The systematic errors are under control up to μB ≈ 300 MeV. For the curvature of the transition line we find that there is an approximate agreement between values from three different observables: the chiral susceptibility, chiral condensate and strange quark susceptibility. The continuum extrapolation is based on Nt=10, 12 and 16 lattices. By combining the analysis for these three observables we find, for the curvature, the value κ = 0.0149±0.0021.
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U2 - 10.1016/j.physletb.2015.11.011
DO - 10.1016/j.physletb.2015.11.011
M3 - Article
AN - SCOPUS:84947079899
SN - 0370-2693
VL - 751
SP - 559
EP - 564
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -