Eos_strange Class Reference
[Equations of state]

Strange matter EOS (MIT Bag model). More...

#include <eos.h>

Inheritance diagram for Eos_strange:
Eos

List of all members.

Public Member Functions

 Eos_strange (double n0_b60_i, double b60_i, double ent0_i, double eps_fit_i, double rho0_b60_i)
 Standard constructor.
 Eos_strange (const Eos_strange &)
 Copy constructor.
virtual ~Eos_strange ()
 Destructor.
void operator= (const Eos_strange &)
 Assignment to another Eos_strange.
virtual bool operator== (const Eos &) const
 Comparison operator (egality).
virtual bool operator!= (const Eos &) const
 Comparison operator (difference).
virtual int identify () const
 Returns a number to identify the sub-classe of Eos the object belongs to.
double get_n0_b60 () const
 Returns the baryon density at zero pressure divided by $B_{60}^{3/4}$ [unit: ${\rm fm}^{-3}$].
double get_b60 () const
 Returns the bag constant [unit: $60\ {\rm MeV\, fm}^{-3}$].
double get_ent0 () const
 Returns the log-enthalpy threshold for setting the energy density to a non zero value (should be negative).
double get_eps_fit () const
 Returns the fitting parameter $\epsilon_{\rm fit}$ related to the square of sound velocity by $c_s^2 = 1/3(1+\epsilon_{\rm fit})$.
double get_rho0_b60 () const
 Returns the energy density at zero pressure divided by $B_{60}$.
virtual void sauve (FILE *) const
 Save in a file.
virtual double nbar_ent_p (double ent, const Param *par=0x0) const
 Computes the baryon density from the log-enthalpy.
virtual double ener_ent_p (double ent, const Param *par=0x0) const
 Computes the total energy density from the log-enthalpy.
virtual double press_ent_p (double ent, const Param *par=0x0) const
 Computes the pressure from the log-enthalpy.
virtual double der_nbar_ent_p (double ent, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln n/d\ln H$ from the log-enthalpy.
virtual double der_ener_ent_p (double ent, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln e/d\ln H$ from the log-enthalpy.
virtual double der_press_ent_p (double ent, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln p/d\ln H$ from the log-enthalpy.
const char * get_name () const
 Returns the EOS name.
void set_name (const char *name_i)
 Sets the EOS name.
virtual bool operator== (const Eos &) const =0
 Comparison operator (egality).
virtual bool operator!= (const Eos &) const =0
 Comparison operator (difference).
Cmp nbar_ent (const Cmp &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the baryon density field from the log-enthalpy field and extra parameters.
Scalar nbar_ent (const Scalar &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the baryon density field from the log-enthalpy field and extra parameters.
Cmp ener_ent (const Cmp &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the total energy density from the log-enthalpy and extra parameters.
Scalar ener_ent (const Scalar &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the total energy density from the log-enthalpy and extra parameters.
Cmp press_ent (const Cmp &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the pressure from the log-enthalpy and extra parameters.
Scalar press_ent (const Scalar &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the pressure from the log-enthalpy and extra parameters.
Cmp der_nbar_ent (const Cmp &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln n/d\ln H$ from the log-enthalpy and extra parameters.
Scalar der_nbar_ent (const Scalar &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln n/d\ln H$ from the log-enthalpy and extra parameters.
Cmp der_ener_ent (const Cmp &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln e/d\ln H$ from the log-enthalpy and extra parameters.
Scalar der_ener_ent (const Scalar &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln e/d\ln H$ from the log-enthalpy and extra parameters.
Cmp der_press_ent (const Cmp &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln p/d\ln H$ from the log-enthalpy and extra parameters.
Scalar der_press_ent (const Scalar &ent, int nzet, int l_min=0, const Param *par=0x0) const
 Computes the logarithmic derivative $d\ln p/d\ln H$ from the log-enthalpy and extra parameters.

Static Public Member Functions

static Eos * eos_from_file (FILE *)
 Construction of an EOS from a binary file.
static Eos * eos_from_file (ifstream &)
 Construction of an EOS from a formatted file.

Protected Member Functions

 Eos_strange (FILE *)
 Constructor from a binary file (created by the function sauve(FILE*) ).
 Eos_strange (ifstream &)
 Constructor from a formatted file.
void set_auxiliary ()
 Computes the auxiliary quantities n0 , rh0 , b34 and fach from the values of the other parameters.
virtual ostream & operator>> (ostream &) const
 Operator >>.
void calcule (const Cmp &thermo, int nzet, int l_min, double(Eos::*fait)(double, const Param *) const, const Param *par, Cmp &resu) const
 General computational method for Cmp 's.
void calcule (const Scalar &thermo, int nzet, int l_min, double(Eos::*fait)(double, const Param *) const, const Param *par, Scalar &resu) const
 General computational method for Scalar 's.

Protected Attributes

double n0_b60
 Baryon density at zero pressure divided by $B_{60}^{3/4}$.
double b60
 Bag constant [unit: $60\ {\rm MeV\, fm}^{-3}$].
double ent0
 Log-enthalpy threshold for setting the energy density to a non zero value (should be negative).
double eps_fit
 Fitting parameter $\epsilon_{\rm fit}$ related to the square of sound velocity by $c_s^2 = 1/3(1+\epsilon_{\rm fit})$.
double rho0_b60
 Energy density at zero pressure divided by $B_{60}$.
double n0
 Baryon density at zero pressure.
double rho0
 Energy density at zero pressure.
double b34
 $B_{60}^{3/4}$
double fach
 Factor $(4+\epsilon_{\rm fit})/(1+\epsilon_{\rm fit})$.
char name [100]
 EOS name.

Friends

Eos * Eos::eos_from_file (FILE *)
 The construction functions from a file.
Eos * Eos::eos_from_file (ifstream &)
ostream & operator<< (ostream &, const Eos &)
 Display.

Detailed Description

Strange matter EOS (MIT Bag model).

This equation of state (EOS) corresponds to u,d,s degenerate symetric matter in the MIT bag model, according to approximate formula given in Zdunik, Astron. Astrophys. 359 , 311 (2000). ()

Definition at line 1530 of file eos.h.

Constructor & Destructor Documentation

Eos_strange::Eos_strange ( double  n0_b60_i,
double  b60_i,
double  ent0_i,
double  eps_fit_i,
double  rho0_b60_i 
)

Standard constructor.

Parameters:
n0_b60_i Baryon density at zero pressure divided by $B_{60}^{3/4}$ [unit: ${\rm fm}^{-3}$]
b60_i Bag constant [unit: $60\ {\rm MeV\, fm}^{-3}$]
ent0_i Log-enthalpy threshold for setting the energy density to a non zero value (should be negative)
eps_fit_i Fitting parameter $\epsilon_{\rm fit}$ related to the square of sound velocity by $c_s^2 = 1/3(1+\epsilon_{\rm fit})$ [cf. Zdunik, Astron. Astrophys. 359 , 311 (2000)]
rho0_b60_i Energy density at zero pressure divided by $B_{60}$ [unit: ${\rm MeV\, fm^{-3}}$]

Definition at line 94 of file eos_strange.C.

References set_auxiliary().

Eos_strange::Eos_strange ( const Eos_strange &  eos_i  ) 

Copy constructor.

Definition at line 110 of file eos_strange.C.

References set_auxiliary().

Eos_strange::Eos_strange ( FILE *  fich  )  [protected]

Constructor from a binary file (created by the function sauve(FILE*) ).

This constructor is protected because any EOS construction from a binary file must be done via the function Eos::eos_from_file(FILE*) .

Definition at line 125 of file eos_strange.C.

References b60, ent0, eps_fit, fread_be(), n0_b60, rho0_b60, and set_auxiliary().

Eos_strange::Eos_strange ( ifstream &  fich  )  [protected]

Constructor from a formatted file.

This constructor is protected because any EOS construction from a formatted file must be done via the function Eos::eos_from_file(ifstream&) .

Definition at line 140 of file eos_strange.C.

References b60, ent0, eps_fit, n0_b60, rho0_b60, and set_auxiliary().

Eos_strange::~Eos_strange (  )  [virtual]

Destructor.

Definition at line 158 of file eos_strange.C.

Member Function Documentation

void Eos::calcule ( const Scalar &  thermo,
int  nzet,
int  l_min,
double(Eos::*)(double, const Param *) const   fait,
const Param *  par,
Scalar &  resu 
) const [protected, inherited]

General computational method for Scalar 's.

Parameters:
thermo [input] thermodynamical quantity (for instance the enthalpy field)from which the thermodynamical quantity resu is to be computed.
nzet [input] number of domains where resu is to be computed.
l_min [input] index of the innermost domain is which resu is to be computed [default value: 0]; resu is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
fait [input] pointer on the member function of class Eos which performs the pointwise calculation.
par possible extra parameters of the EOS
resu [output] result of the computation.

Definition at line 264 of file eos.C.

References Scalar::annule(), Valeur::c, Valeur::coef_i(), Tbl::get_etat(), Scalar::get_etat(), Tensor::get_mp(), Mg3d::get_nzone(), Scalar::get_spectral_va(), Tbl::get_taille(), Valeur::set_etat_c_qcq(), Tbl::set_etat_qcq(), Mtbl::set_etat_qcq(), Scalar::set_etat_qcq(), Tbl::set_etat_zero(), Scalar::set_etat_zero(), Scalar::set_spectral_va(), Tbl::t, and Mtbl::t.

void Eos::calcule ( const Cmp &  thermo,
int  nzet,
int  l_min,
double(Eos::*)(double, const Param *) const   fait,
const Param *  par,
Cmp &  resu 
) const [protected, inherited]

General computational method for Cmp 's.

Parameters:
thermo [input] thermodynamical quantity (for instance the enthalpy field)from which the thermodynamical quantity resu is to be computed.
nzet [input] number of domains where resu is to be computed.
l_min [input] index of the innermost domain is which resu is to be computed [default value: 0]; resu is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
fait [input] pointer on the member function of class Eos which performs the pointwise calculation.
par possible extra parameters of the EOS
resu [output] result of the computation.

Definition at line 199 of file eos.C.

References Cmp::annule(), Valeur::c, Valeur::coef_i(), Tbl::get_etat(), Cmp::get_etat(), Cmp::get_mp(), Mg3d::get_nzone(), Tbl::get_taille(), Valeur::set_etat_c_qcq(), Tbl::set_etat_qcq(), Mtbl::set_etat_qcq(), Cmp::set_etat_qcq(), Tbl::set_etat_zero(), Cmp::set_etat_zero(), Tbl::t, Mtbl::t, and Cmp::va.

Scalar Eos::der_ener_ent ( const Scalar &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the logarithmic derivative $d\ln e/d\ln H$ from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the derivative dln(e)/dln(H) is to be computed.
l_min index of the innermost domain is which the coefficient dln(n)/dln(H) is to be computed [default value: 0]; the derivative dln(e)/dln(H) is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
dln(e)/dln(H)

Definition at line 436 of file eos.C.

References Eos::calcule(), Eos::der_ener_ent_p(), and Tensor::get_mp().

Cmp Eos::der_ener_ent ( const Cmp &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the logarithmic derivative $d\ln e/d\ln H$ from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the derivative dln(e)/dln(H) is to be computed.
l_min index of the innermost domain is which the coefficient dln(n)/dln(H) is to be computed [default value: 0]; the derivative dln(e)/dln(H) is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
dln(e)/dln(H)

Definition at line 426 of file eos.C.

References Eos::calcule(), Eos::der_ener_ent_p(), and Cmp::get_mp().

double Eos_strange::der_ener_ent_p ( double  ent,
const Param *  par = 0x0 
) const [virtual]

Computes the logarithmic derivative $d\ln e/d\ln H$ from the log-enthalpy.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H
Returns:
dln(e)/dln(H)

Implements Eos.

Definition at line 375 of file eos_strange.C.

References ent0, eps_fit, exp(), and fach.

Scalar Eos::der_nbar_ent ( const Scalar &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the logarithmic derivative $d\ln n/d\ln H$ from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the derivative dln(n)/dln(H) is to be computed.
l_min index of the innermost domain is which the coefficient dln(n)/dln(H) is to be computed [default value: 0]; the derivative dln(n)/dln(H) is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
dln(n)/dln(H)

Definition at line 413 of file eos.C.

References Eos::calcule(), Eos::der_nbar_ent_p(), and Tensor::get_mp().

Cmp Eos::der_nbar_ent ( const Cmp &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the logarithmic derivative $d\ln n/d\ln H$ from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the derivative dln(n)/dln(H) is to be computed.
l_min index of the innermost domain is which the coefficient dln(n)/dln(H) is to be computed [default value: 0]; the derivative dln(n)/dln(H) is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
dln(n)/dln(H)

Definition at line 403 of file eos.C.

References Eos::calcule(), Eos::der_nbar_ent_p(), and Cmp::get_mp().

double Eos_strange::der_nbar_ent_p ( double  ent,
const Param *  par = 0x0 
) const [virtual]

Computes the logarithmic derivative $d\ln n/d\ln H$ from the log-enthalpy.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H
Returns:
dln(n)/dln(H)

Implements Eos.

Definition at line 360 of file eos_strange.C.

References ent0, and eps_fit.

Scalar Eos::der_press_ent ( const Scalar &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the logarithmic derivative $d\ln p/d\ln H$ from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the derivative dln(p)/dln(H) is to be computed.
par possible extra parameters of the EOS
l_min index of the innermost domain is which the coefficient dln(n)/dln(H) is to be computed [default value: 0]; the derivative dln(p)/dln(H) is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
Returns:
dln(p)/dln(H)

Definition at line 458 of file eos.C.

References Eos::calcule(), Eos::der_press_ent_p(), and Tensor::get_mp().

Cmp Eos::der_press_ent ( const Cmp &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the logarithmic derivative $d\ln p/d\ln H$ from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the derivative dln(p)/dln(H) is to be computed.
par possible extra parameters of the EOS
l_min index of the innermost domain is which the coefficient dln(n)/dln(H) is to be computed [default value: 0]; the derivative dln(p)/dln(H) is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
Returns:
dln(p)/dln(H)

Definition at line 448 of file eos.C.

References Eos::calcule(), Eos::der_press_ent_p(), and Cmp::get_mp().

double Eos_strange::der_press_ent_p ( double  ent,
const Param *  par = 0x0 
) const [virtual]

Computes the logarithmic derivative $d\ln p/d\ln H$ from the log-enthalpy.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H
Returns:
dln(p)/dln(H)

Implements Eos.

Definition at line 393 of file eos_strange.C.

References ent0, exp(), and fach.

Scalar Eos::ener_ent ( const Scalar &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the total energy density from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the energy density is to be computed.
l_min index of the innermost domain is which the energy density is to be computed [default value: 0]; the energy density is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
energy density [unit: $\rho_{\rm nuc} c^2$], where $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$

Definition at line 369 of file eos.C.

References Eos::calcule(), Eos::ener_ent_p(), and Tensor::get_mp().

Cmp Eos::ener_ent ( const Cmp &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the total energy density from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the energy density is to be computed.
l_min index of the innermost domain is which the energy density is to be computed [default value: 0]; the energy density is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
energy density [unit: $\rho_{\rm nuc} c^2$], where $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$

Definition at line 359 of file eos.C.

References Eos::calcule(), Eos::ener_ent_p(), and Cmp::get_mp().

double Eos_strange::ener_ent_p ( double  ent,
const Param *  par = 0x0 
) const [virtual]

Computes the total energy density from the log-enthalpy.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H
Returns:
energy density e [unit: $\rho_{\rm nuc} c^2$], where $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$

Implements Eos.

Definition at line 325 of file eos_strange.C.

References ent0, eps_fit, exp(), fach, and rho0.

Eos * Eos::eos_from_file ( ifstream &  fich  )  [static, inherited]

Construction of an EOS from a formatted file.

The fist line of the file must start by the EOS number, according to the following conventions:

  • 1 = relativistic polytropic EOS (class Eos_poly ).
  • 2 = Newtonian polytropic EOS (class Eos_poly_newt ).
  • 3 = Relativistic incompressible EOS (class Eos_incomp ).
  • 4 = Newtonian incompressible EOS (class Eos_incomp_newt ).
  • 5 = Strange matter (MIT Bag model)
  • 6 = Strange matter (MIT Bag model) with crust
  • 10 = SLy4 (Douchin & Haensel 2001)
  • 11 = FPS (Friedman-Pandharipande + Skyrme)
  • 12 = BPAL12 (Bombaci et al. 1995)
  • 13 = AkmalPR (Akmal, Pandharipande & Ravenhall 1998)
  • 14 = BBB2 (Baldo, Bombaci & Burgio 1997)
  • 15 = BalbN1H1 (Balberg 2000)
  • 16 = GlendNH3 (Glendenning 1985, case 3)
  • 17 = Compstar (Tabulated EOS for 2010 CompStar school)
  • 18 = magnetized (tabulated) equation of state
  • 19 = relativistic ideal Fermi gas at zero temperature (class Eos_Fermi)
  • 100 = Multi-domain EOS (class MEos )
  • 110 = Multi-polytropic EOS (class Eos_multi_poly )
  • 120 = Fitted SLy4 (Shibata 2004)
  • 121 = Fitted FPS (Shibata 2004)
  • 122 = Fitted AkmalPR (Taniguchi 2005)

The second line in the file should contain a name given by the user to the EOS. The following lines should contain the EOS parameters (one parameter per line), in the same order than in the class declaration.

Definition at line 297 of file eos_from_file.C.

Eos * Eos::eos_from_file ( FILE *  fich  )  [static, inherited]

Construction of an EOS from a binary file.

The file must have been created by the function sauve(FILE*) .

Definition at line 165 of file eos_from_file.C.

References fread_be().

double Eos_strange::get_b60 (  )  const [inline]

Returns the bag constant [unit: $60\ {\rm MeV\, fm}^{-3}$].

Definition at line 1656 of file eos.h.

References b60.

double Eos_strange::get_ent0 (  )  const [inline]

Returns the log-enthalpy threshold for setting the energy density to a non zero value (should be negative).

Definition at line 1661 of file eos.h.

References ent0.

double Eos_strange::get_eps_fit (  )  const [inline]

Returns the fitting parameter $\epsilon_{\rm fit}$ related to the square of sound velocity by $c_s^2 = 1/3(1+\epsilon_{\rm fit})$.

[cf. Zdunik, Astron. Astrophys. 359 , 311 (2000)]

Definition at line 1667 of file eos.h.

References eps_fit.

double Eos_strange::get_n0_b60 (  )  const [inline]

Returns the baryon density at zero pressure divided by $B_{60}^{3/4}$ [unit: ${\rm fm}^{-3}$].

Definition at line 1653 of file eos.h.

References n0_b60.

const char * Eos::get_name (  )  const [inherited]

Returns the EOS name.

Definition at line 165 of file eos.C.

References Eos::name.

double Eos_strange::get_rho0_b60 (  )  const [inline]

Returns the energy density at zero pressure divided by $B_{60}$.

[unit: $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$]

Definition at line 1672 of file eos.h.

References rho0_b60.

int Eos_strange::identify (  )  const [virtual]

Returns a number to identify the sub-classe of Eos the object belongs to.

Implements Eos.

Definition at line 127 of file eos_from_file.C.

Scalar Eos::nbar_ent ( const Scalar &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the baryon density field from the log-enthalpy field and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the baryon density is to be computed.
l_min index of the innermost domain is which the baryon density is to be computed [default value: 0]; the baryon density is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
baryon density [unit: $n_{\rm nuc} := 0.1 \ {\rm fm}^{-3}$]

Definition at line 344 of file eos.C.

References Eos::calcule(), Tensor::get_mp(), and Eos::nbar_ent_p().

Cmp Eos::nbar_ent ( const Cmp &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the baryon density field from the log-enthalpy field and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the baryon density is to be computed.
l_min index of the innermost domain is which the baryon density is to be computed [default value: 0]; the baryon density is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
baryon density [unit: $n_{\rm nuc} := 0.1 \ {\rm fm}^{-3}$]

Definition at line 334 of file eos.C.

References Eos::calcule(), Cmp::get_mp(), and Eos::nbar_ent_p().

double Eos_strange::nbar_ent_p ( double  ent,
const Param *  par = 0x0 
) const [virtual]

Computes the baryon density from the log-enthalpy.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H
Returns:
baryon density n [unit: $n_{\rm nuc} := 0.1 \ {\rm fm}^{-3}$]

Implements Eos.

Definition at line 310 of file eos_strange.C.

References ent0, eps_fit, exp(), and n0.

virtual bool Eos::operator!= ( const Eos &   )  const [pure virtual, inherited]

Comparison operator (difference).

bool Eos_strange::operator!= ( const Eos &  eos_i  )  const [virtual]

Comparison operator (difference).

Definition at line 261 of file eos_strange.C.

References operator==().

void Eos_strange::operator= ( const Eos_strange &  eosi  ) 

Assignment to another Eos_strange.

Definition at line 168 of file eos_strange.C.

References b60, ent0, eps_fit, n0_b60, Eos::name, rho0_b60, set_auxiliary(), and Eos::set_name().

virtual bool Eos::operator== ( const Eos &   )  const [pure virtual, inherited]

Comparison operator (egality).

bool Eos_strange::operator== ( const Eos &  eos_i  )  const [virtual]

Comparison operator (egality).

Definition at line 207 of file eos_strange.C.

References b60, ent0, eps_fit, identify(), Eos::identify(), n0_b60, and rho0_b60.

ostream & Eos_strange::operator>> ( ostream &  ost  )  const [protected, virtual]

Operator >>.

Implements Eos.

Definition at line 283 of file eos_strange.C.

References b60, ent0, eps_fit, n0_b60, and rho0_b60.

Scalar Eos::press_ent ( const Scalar &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the pressure from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the pressure is to be computed.
l_min index of the innermost domain is which the pressure is to be computed [default value: 0]; the pressure is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
pressure [unit: $\rho_{\rm nuc} c^2$], where $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$

Definition at line 391 of file eos.C.

References Eos::calcule(), Tensor::get_mp(), and Eos::press_ent_p().

Cmp Eos::press_ent ( const Cmp &  ent,
int  nzet,
int  l_min = 0,
const Param *  par = 0x0 
) const [inherited]

Computes the pressure from the log-enthalpy and extra parameters.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H defined by $H = c^2 \ln\left( {e+p \over m_B c^2 n} \right) $, where e is the (total) energy density, p the pressure, n the baryon density, and $m_B$ the baryon mass
nzet number of domains where the pressure is to be computed.
l_min index of the innermost domain is which the pressure is to be computed [default value: 0]; the pressure is computed only in domains whose indices are in [l_min,l_min+nzet-1] . In the other domains, it is set to zero.
par possible extra parameters of the EOS
Returns:
pressure [unit: $\rho_{\rm nuc} c^2$], where $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$

Definition at line 381 of file eos.C.

References Eos::calcule(), Cmp::get_mp(), and Eos::press_ent_p().

double Eos_strange::press_ent_p ( double  ent,
const Param *  par = 0x0 
) const [virtual]

Computes the pressure from the log-enthalpy.

Parameters:
ent [input, unit: $c^2$] log-enthalpy H
Returns:
pressure p [unit: $\rho_{\rm nuc} c^2$], where $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$

Implements Eos.

Definition at line 343 of file eos_strange.C.

References ent0, exp(), fach, and rho0.

void Eos_strange::sauve ( FILE *  fich  )  const [virtual]

Save in a file.

Reimplemented from Eos.

Definition at line 271 of file eos_strange.C.

References b60, ent0, eps_fit, fwrite_be(), n0_b60, and rho0_b60.

void Eos_strange::set_auxiliary (  )  [protected]

Computes the auxiliary quantities n0 , rh0 , b34 and fach from the values of the other parameters.

Definition at line 187 of file eos_strange.C.

References b34, b60, eps_fit, fach, n0, n0_b60, pow(), rho0, and rho0_b60.

void Eos::set_name ( const char *  name_i  )  [inherited]

Sets the EOS name.

Definition at line 159 of file eos.C.

References Eos::name.

Friends And Related Function Documentation

Eos* Eos::eos_from_file ( FILE *   )  [friend]

The construction functions from a file.

ostream& operator<< ( ostream &  ,
const Eos &   
) [friend, inherited]

Display.

Member Data Documentation

double Eos_strange::b34 [protected]

$B_{60}^{3/4}$

Definition at line 1574 of file eos.h.

double Eos_strange::b60 [protected]

Bag constant [unit: $60\ {\rm MeV\, fm}^{-3}$].

Definition at line 1542 of file eos.h.

double Eos_strange::ent0 [protected]

Log-enthalpy threshold for setting the energy density to a non zero value (should be negative).

Definition at line 1547 of file eos.h.

double Eos_strange::eps_fit [protected]

Fitting parameter $\epsilon_{\rm fit}$ related to the square of sound velocity by $c_s^2 = 1/3(1+\epsilon_{\rm fit})$.

[cf. Zdunik, Astron. Astrophys. 359 , 311 (2000)]

Definition at line 1553 of file eos.h.

double Eos_strange::fach [protected]

Factor $(4+\epsilon_{\rm fit})/(1+\epsilon_{\rm fit})$.

Definition at line 1579 of file eos.h.

double Eos_strange::n0 [protected]

Baryon density at zero pressure.

[unit: $0.1{\rm \ fm}^{-3}$ (Lorene's unit)]

Definition at line 1563 of file eos.h.

double Eos_strange::n0_b60 [protected]

Baryon density at zero pressure divided by $B_{60}^{3/4}$.

[unit: ${\rm fm}^{-3}$]

Definition at line 1539 of file eos.h.

char Eos::name[100] [protected, inherited]

EOS name.

Definition at line 186 of file eos.h.

double Eos_strange::rho0 [protected]

Energy density at zero pressure.

[unit: $\rho_{\rm nuc} := 1.66\ 10^{17} \ {\rm kg/m}^3$ (Lorene's unit)]

Definition at line 1569 of file eos.h.

double Eos_strange::rho0_b60 [protected]

Energy density at zero pressure divided by $B_{60}$.

[unit: ${\rm MeV\, fm^{-3}}$]

Definition at line 1558 of file eos.h.

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