Quantifying corrections to the hadron resonance gas with lattice QCD

Autor: Bellwied, Rene, Bors��nyi, Szabolcs, Fodor, Zolt��n, Guenther, Jana N., Katz, S��ndor D., Parotto, Paolo, P��sztor, Attila, Peszny��k, D��vid, Ratti, Claudia, Szab��, K��lm��n K.
Přispěvatelé: Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: 38th International Symposium on Lattice Field Theory
38th International Symposium on Lattice Field Theory, Jul 2021, Online, United States
Sissa Medialab Trieste, Italy 396, 10 pages (2022). doi:10.22323/1.396.0186
Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)-Sissa Medialab Trieste, Italy, 2022.-ISBN-doi:10.22323/1.396.0186
Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)-Sissa Medialab Trieste, Italy, 2022.-ISBN-doi:10.22323/1.396.0186The 38th International Symposium on Lattice Field Theory, LATTICE2021, Zoom/Gather@Massachusetts Institute of Technology, USA, 2021-07-26-2021-07-30
PoS
38th International Symposium on Lattice Field Theory, Jul 2021, Online, United States. pp.186, ⟨10.22323/1.396.0186⟩
DOI: 10.22323/1.396.0186
Popis: 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 $N_\tau=8,10$ 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 ($\mu_B$) - strangeness chemical potential ($\mu_S$) 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 $T_\mathrm{c}(\mu_B)$ at strangeness neutrality are able to reproduce trends of experimental net-proton fluctuations measured by the STAR Collaboration.
Comment: 10 pages, 4 figures, Contribution to the 38th International Symposium on Lattice Field Theory, LATTICE2021 26th-30th July, 2021
Databáze: OpenAIRE