This is a public beta version of the equation of state tables based on the NEOS model.

The pressure, the temperature and the chemical potentials are given as functions of the energy and the net baryon density. The range of baryon chemical potential is extended up to 600 MeV and that of the temperature range up to 1 TeV. Note that the tables are valid only within those ranges as the temperature and baryon chemical potential are truncated at the maximum values. Also, the validity range of the Taylor expansion method of lattice QCD applies.

The equation of state is available with three different conditions: (i) NEOS B where the strangeness and the electric charge chemical potentials are zero, (ii) NEOS BS where the strangeness density and the electric charge chemical potential are zero, and (iii) NEOS BQS where the strangeness density is zero and the electric charge-to-baryon ratio is fixed to 0.4. NEOS BQS is the most realistic equation of state for heavy-ion collisions at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider.

The equation of state tables are prepared in the azhydro format. A sample code snippet for reading in the tables can be found here: sample.cpp. Note that the code snippet does not work alone but has to be adjusted and incorporated into hydrodynamic codes.

When you use the NEOS results for your publication, the following papers should be cited:

[1] A. Monnai, B. Schenke, C. Shen, Phys. Rev. C100, 024907 (2019) [arXiv:1902.05095]

[2] A. Bazavov et al. (HotQCD), Phys. Rev. D90, 094503 (2014) [arXiv:1407.6387]

[3] A. Bazavov et al. (HotQCD), Phys. Rev. D86, 034509 (2012) [arXiv:1203.0784]

[4] H. T. Ding, S. Mukherjee, H. Ohno, P. Petreczky, and H. P. Schadler, Phys. Rev. D92, 074043 (2015) [arXiv:1507.06637]

[5] A. Bazavov et al., Phys. Rev. D95, 054504 (2017) [arXiv:1701.04325]

If you need to redistribute the tables, please contact the authors to avoid confusion regarding the version control. We are not responsible for results produced by a third party using these tables.