Standard polytropic EOS .
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#include <eos_tov.h>
Public Member Functions | |
void | set_coeff_index (double coeff, double index) |
Set the coefficient and polytropic index. | |
void | set_baryon_density (double nb, double ed) |
Set the baryon density. | |
virtual double | ed_from_pr (double pr) |
From the pressure, return the energy density. | |
virtual double | pr_from_ed (double ed) |
From the energy density, return the pressure. | |
virtual double | nb_from_ed (double ed) |
From the energy density, return the baryon density. | |
virtual double | nb_from_pr (double pr) |
From the pressure, return the baryon density. | |
virtual double | ed_from_nb (double nb) |
From the baryon density, return the energy density. | |
virtual double | pr_from_nb (double nb) |
From the baryon density, return the pressure. | |
virtual void | ed_nb_from_pr (double pr, double &ed, double &nb) |
Given the pressure, produce the energy and number densities. | |
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bool | has_baryons () |
Return true if a baryon density is available. | |
void | check_nb (double &avg_abs_dev, double &max_abs_dev) |
Check that the baryon density is consistent with the ![]() | |
Protected Attributes | |
double | nb1 |
The baryon density at ed1 . | |
double | ed1 |
The energy density for which the baryon density is known. | |
double | pr1 |
The pressure at ed1 . | |
double | K |
Coefficient (default 1.0) | |
double | n |
Index (default 3.0) | |
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bool | baryon_column |
Set to true if the baryon density is provided in the EOS (default false) | |
Additional Inherited Members | |
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int | verbose |
Control for output (default 1) | |
The quantity must be in units of
.
For a polytrope beginning at a pressure of
, an energy density of
and a baryon density of
, the baryon density along the polytrope is
Similarly, the chemical potential is
The expression for the baryon density can be inverted to determine
Sometimes the baryon susceptibility is also useful
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