Abstract
The hadron resonance gas (HRG) model and its extensions are often used to describe the hadronic phase of strongly interacting matter. In our work we use lattice-QCD simulations with temporal extents of Nr = 8, 10 and 12 to quantify corrections to the ideal HRG. Firstly, we determine a number of subleading fugacity expansion coefficients of the QCD free energy via a two-dimensional scan on the imaginary baryon number chemical potential (μB) - strangeness chemical potential (μS) plane. Using the aforementioned coefficients, we also extrapolate ratios of baryon number and strangeness fluctuations and correlations to finite chemical potentials via a truncated fugacity expansion. Our results extrapolated along the crossover line Tc(μB) at strangeness neutrality are able to reproduce trends of experimental net-proton fluctuations measured by the STAR Collaboration.
Original language | English (US) |
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Article number | 186 |
Journal | Proceedings of Science |
Volume | 396 |
State | Published - Jul 8 2022 |
Event | 38th International Symposium on Lattice Field Theory, LATTICE 2021 - Virtual, Online, United States Duration: Jul 26 2021 → Jul 30 2021 |
All Science Journal Classification (ASJC) codes
- General