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arXiv · 1507.04627

Fluctuations and correlations in high temperature QCD

R. Bellwied·S. Borsanyi·Z. Fodor·S. D. Katz·A. Pasztor·C. Ratti·K. K. Szabo
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Abstract

We calculate second- and fourth-order cumulants of conserved charges in a temperature range stretching from the QCD transition region towards the realm of (resummed) perturbation theory. We perform lattice simulations with staggered quarks; the continuum extrapolation is based on $N_t=10\dots24$ in the crossover-region and $N_t=8\dots16$ at higher temperatures. We find that the Hadron Resonance Gas model predictions describe the lattice data rather well in the confined phase. At high temperatures (above $\sim$250 MeV) we find agreement with the three-loop Hard Thermal Loop results.

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R. Bellwied, S. Borsanyi, Z. Fodor, S. D. Katz, A. Pasztor, C. Ratti, K. K. Szabo. 2015-07-16. Fluctuations and correlations in high temperature QCD. https://doi.org/10.1103/physrevd.92.114505

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