Equations of state and phase diagrams for hybrid nuclear/quark matter at constant entropy per baryon

This dataset contains tabulated equations of state (EoS) for warm, dense matter with a first-order transition from nuclear matter to deconfined quark matter, obtained by a **Maxwell construction at constant entropy per baryon**, together with the corresponding phase boundaries. Two hybrid models are provided. For the neutron-star composition, each isentrope has been integrated through the Tolman–Oppenheimer–Volkoff (TOV) equations, so radius and gravitational mass accompany thethermodynamic columns. The tables are intended for use in supernova and neutron-star-merger simulations and in cosmological Q-ball evolution. Licence: Creative Commons Attribution 4.0 International licence (CC BY 4.0) Funding: This research is part of the project No. 2021/43/P/ST2/03319 co-funded by the National Science Centre and the European Union Framework Programme for Research and Innovation Horizon 2020 under the Marie Skłodowska-Curie grant agreement No. 945339. For the purpose of Open Access, the author has applied a CC-BY public copyright licence to any Author Accepted Manuscript (AAM) version arising from this submission.