{ "id": "1907.08179", "version": "v1", "published": "2019-07-18T17:39:39.000Z", "updated": "2019-07-18T17:39:39.000Z", "title": "Strangeness neutrality and the QCD phase diagram", "authors": [ "Fabian Rennecke", "Wei-jie Fu", "Jan M. Pawlowski" ], "comment": "15 pages, 6 Figures; Contribution to the proceedings of the CPOD2018 conference", "categories": [ "hep-ph", "nucl-th" ], "abstract": "Since the incident nuclei in heavy-ion collisions do not carry strangeness, the global net strangeness of the detected hadrons has to vanish. We show that there is an intimate relation between strangeness neutrality and baryon-strangeness correlations. In the context of heavy-ion collisions, the former is a consequence of quark number conservation of the strong interactions while the latter are sensitive probes of the character of QCD matter. We investigate the sensitivity of baryon-strangeness correlations on the freeze-out conditions of heavy-ion collisions by studying their dependence on temperature, baryon- and strangeness chemical potential. The impact of strangeness neutrality on the QCD equation of state at finite chemical potentials will also be discussed. We model the low-energy sector of QCD by an effective Polyakov loop enhanced quark-meson model with 2+1 dynamical quark flavors and use the functional renormalization group to account for the non-perturbative quantum fluctuations of hadrons.", "revisions": [ { "version": "v1", "updated": "2019-07-18T17:39:39.000Z" } ], "analyses": { "keywords": [ "qcd phase diagram", "strangeness neutrality", "heavy-ion collisions", "baryon-strangeness correlations", "polyakov loop enhanced quark-meson model" ], "tags": [ "conference paper" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }