Hadronic fluctuations and correlations at nonzero chemical potential

Understand

We present a lattice study of fluctuations and correlations among the conserved charges baryon number and strangeness in (2+1)-flavor QCD.

• The lattice calculations are based on a Taylor expansion of the pressure.
• Results are presented at zero and nonzero density on lattices with four and six time slices, corresponding to a lattice spacing of $a\approx 0.25$ fm and $a\approx 0.16$ fm, respectively.
• The quark masses are almost physical, i.e.