Detailed Description

This implements a linear EOS with a fixed speed of sound and a fixed energy density at zero pressure. This will also compute the baryon density, if one calls set_baryon_density() to set the baryon density at one fiducial energy density.

Given a fiducial baryon density $n_{B,1}$ at some energy density $\varepsilon_1$ and pressure $ P_1 $ , the baryon density is

$n_B = n_{B,1} \left[ \frac{\varepsilon(1+c_s^2) - c_s^2 \varepsilon_0 } {\varepsilon_1 (1 + c_s^2) - c_s^2 \varepsilon_0}\right]^{1/(1+c_s^2)} = n_{B,1} \left[ \frac{ \varepsilon + P } {\varepsilon_1 + P_1} \right]^{1/(1+c_s^2)}$

Note: Experimental

Definition at line 420 of file eos_tov.h.

Public Member Functions
void	set_cs2_eps0 (double cs2_, double eps0_)
	Set the sound speed and energy density at zero pressure.

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.

Public Member Functions inherited from o2scl::eos_tov
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 $P(\varepsilon)$ .

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 for which the baryon density is known.

double	cs2
	Coefficient (default 1.0)

double	eps0
	The energy density at zero pressure (default 0.0)

Protected Attributes inherited from o2scl::eos_tov
bool	baryon_column
	Set to true if the baryon density is provided in the EOS (default false)

Additional Inherited Members
Public Attributes inherited from o2scl::eos_tov
int	verbose
	Control for output (default 1)

The documentation for this class was generated from the following file:

/home/awsteiner/wcs/o2scl/src/eos/eos_tov.h

Detailed Description

Public Member Functions

Protected Attributes

Additional Inherited Members