Equation of State for physical quark masses

By M. Cheng, S. Ejiri, P. Hegde, F. Karsch, O. Kaczmarek, E. Laermann, R. Mawhinney, C. Miao, Swagato Mukherjee, P. Petreczky and 2 more. 2009

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We calculate the QCD equation of state for temperatures corresponding to the transition region with physical mass values for two degenerate light quark flavors and a strange quark using an improved staggered fermion action (p4-action) on lattices with temporal extent N{sub {tau}=}8. We compare our results with previous calculations performed at twice larger values of the light quark masses as well as with results obtained from a resonance gas model calculation. We also discuss the deconfining and chiral aspects of the QCD transition in terms of renormalized Polyakov loop, strangeness fluctuations, and subtracted chiral condensate. We show that compared to the calculations performed at twice larger value of the light quark mass the transition region shifts by about 5 MeV toward smaller temperatures.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e8d36ea8ab9655f6fa0b069b7f3e9cf1077a5de1

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In Nuclear and High Energy Physics

Citations in the corpus

Is there still any Tc mystery in lattice QCD? Results with physical masses in the continuum limit III (2010, methodology): “Recent simulations using the p4 action with the quark mass ratio ms/mu = 20 yielded about 5 MeV shift (towards the smaller values) in the temperature dependence of the studied observables [6].”
The QCD equation of state with dynamical quarks (2010, methodology): “e lattice artefacts more seriously. It is therefore not surprising that the results obtained in the present paper are rather diﬀerent from the ones obtained by the “hotQCD” collaboration in Reference [14]. The paper is divided into two major parts: Section 2 describes the methods and techniques, whi”
From hadrons to quarks in neutron stars: a review (2017, background): “To further motivate the unified construction of the equation of state of cold dense matter, and the emerging role of hadron-quark continuity in the phase diagram, we briefly consider implications of the lattice results [129, 130, 255, 256] for the structure of the equation of state at zero chemical ”
Transport properties of the quark-gluon plasma (2011, background): “e treated in this review, which are only brieﬂy mentioned here. The extraction of a shear viscosity estimate from heavy-ion data is reviewed in [3]. The thermodynamic propertiesofthe quark-gluonplasma[41,42,43,44,45]have been reviewed recently [1]. The behavior of spatial correlation lengths is disc”