Equation of State

The EoS input file is required if the options use_beta_equilibrium or use_charge_neutrality are enabled. It must contain the following columns, presented in order:

Variable	Unit
Temperature (T)	MeV
Baryon chemical potential (${\mu }_B$)	MeV
Strange chemical potential (${\mu }_S$)	MeV
Electric charge chemical potential (${\mu }_Q$)	MeV
Baryon density ($n_B$)	fm-3
Strange density ($n_S$)	fm-3
Electric charge density ($n_Q$)	fm-3
Energy density ($\epsilon$)	MeV/fm3
Pressure ($P$)	MeV/fm3
Entropy density ($s$)	1/fm3

If your model distinguishes between the ‘physical’ baryon density ($n_B=\partial P/\partial {\mu }_B$) and the total baryon density resulting sum of particle densities ($n_B^{particles}=\sum _i{B}_i{n}_i$), please pass the physical baryon density in the fifth EoS file, and append the particle baryon density in the last (11th) column, in fm^-3.

This happens, for example, in models with a potential that is an explicit functions of ${\mu }_B$. This is crucial if neutrinos are used, as the code will calculate the lepton fraction from the particle baryon density ($Y_L=n_L/n_B^{particles}$), if provided.