forwarddeclarations.h File Reference

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Typedefs
typedef std::bitset< 6 >	ReactionsBitSet
	Container for the 2 to 2 reactions in the code. More...

Enumerations
enum	CalculationFrame { CalculationFrame::CenterOfVelocity, CalculationFrame::CenterOfMass, CalculationFrame::FixedTarget }
	The calculation frame. More...
enum	FermiMotion { FermiMotion::Off, FermiMotion::On, FermiMotion::Frozen }
	Option to use Fermi Motion. More...
enum	Sampling { Sampling::Uniform, Sampling::Quadratic, Sampling::Custom }
	Possible methods of impact parameter sampling. More...
enum	TimeStepMode : char { TimeStepMode::None, TimeStepMode::Fixed }
	The time step mode. More...
enum	BoxInitialCondition { BoxInitialCondition::ThermalMomenta, BoxInitialCondition::PeakedMomenta }
	Initial condition for a particle in a box. More...
enum	SphereInitialCondition {   SphereInitialCondition::ThermalMomenta, SphereInitialCondition::IC_ES, SphereInitialCondition::IC_1M, SphereInitialCondition::IC_2M,   SphereInitialCondition::IC_Massive }
	Initial condition for a particle in a sphere. More...
enum	ExpansionMode { ExpansionMode::NoExpansion, ExpansionMode::MasslessFRW, ExpansionMode::MassiveFRW, ExpansionMode::Exponential }
	Defines properties of expansion for the metric (e.g. More...
enum	NNbarTreatment { NNbarTreatment::NoAnnihilation, NNbarTreatment::Resonances, NNbarTreatment::Strings }
	Treatment of N Nbar Annihilation. More...
enum	ThermodynamicQuantity : char { ThermodynamicQuantity::EckartDensity, ThermodynamicQuantity::Tmn, ThermodynamicQuantity::TmnLandau, ThermodynamicQuantity::LandauVelocity }
	Represents thermodynamic quantities that can be printed out. More...
enum	IncludedReactions {   All = 50, Elastic = 0, NN_to_NR = 1, NN_to_DR = 2,   KN_to_KN = 3, KN_to_KDelta = 4, Strangeness_exchange = 5 }
	The different groups of 2 to 2 reactions that one can include. More...
enum	ThermalizationAlgorithm { ThermalizationAlgorithm::ModeSampling, ThermalizationAlgorithm::BiasedBF, ThermalizationAlgorithm::UnbiasedBF }
	Defines the algorithm used for the forced thermalization. More...

Typedef Documentation

ReactionsBitSet

typedef std::bitset<6> ReactionsBitSet

Container for the 2 to 2 reactions in the code.

Definition at line 201 of file forwarddeclarations.h.

Enumeration Type Documentation

CalculationFrame

enum CalculationFrame

strong

The calculation frame.

Enumerator
CenterOfVelocity
CenterOfMass
FixedTarget

Definition at line 85 of file forwarddeclarations.h.

                            {
  CenterOfVelocity,
  CenterOfMass,
  FixedTarget,
};

FermiMotion

enum FermiMotion

strong

Option to use Fermi Motion.

Enumerator
Off	Don't use fermi motion.
On	Use fermi motion in combination with potentials.
Frozen	Use fermi motion without potentials.

Definition at line 92 of file forwarddeclarations.h.

                       {
  Off,
  On,
  Frozen,
};

Sampling

enum Sampling

strong

Possible methods of impact parameter sampling.

Enumerator
Uniform	Sample from uniform distribution.
Quadratic	Sample from areal / quadratic distribution.
Custom	Sample from custom, user-defined distribution.

Definition at line 102 of file forwarddeclarations.h.

                    {
  Uniform,
  Quadratic,
  Custom,
};

TimeStepMode

enum TimeStepMode : char

strong

The time step mode.

Enumerator
None	Don't use time steps; propagate from action to action.
Fixed	Use fixed time step.

Definition at line 112 of file forwarddeclarations.h.

                        : char {
  None,
  Fixed,
};

BoxInitialCondition

enum BoxInitialCondition

strong

Initial condition for a particle in a box.

If PeakedMomenta is used, all particles have the same momentum \(p = 3 \cdot T\) with T being the temperature.

Else, a thermalized ensemble is generated (the momenta are sampled from a Maxwell-Boltzmann distribution).

In either case, the positions in space are chosen randomly.

Enumerator
ThermalMomenta
PeakedMomenta

Definition at line 130 of file forwarddeclarations.h.

                               {
  ThermalMomenta,
  PeakedMomenta,
};

SphereInitialCondition

enum SphereInitialCondition

strong

Initial condition for a particle in a sphere.

IC_ES, IC_1M and IC_2M are off-equilibrium distributions used in massless comparisons of SMASH to the extended universe metric. They are described in some detail in iref Bazow:2016oky

IC_Massive is a generalization of IC_ES for the non-zero mass case; note that there is currently no analytical comparison possible with this distribution.

The default value, ThermalMomenta, samples momenta from a Maxwell-Boltzmann distribution and thus generates a thermal ensemble.

Enumerator
ThermalMomenta
IC_ES
IC_1M
IC_2M
IC_Massive

Definition at line 148 of file forwarddeclarations.h.

                                  {
  ThermalMomenta,
  IC_ES,
  IC_1M,
  IC_2M,
  IC_Massive,
};

ExpansionMode

enum ExpansionMode

strong

Defines properties of expansion for the metric (e.g.

FRW)

If anything else than NoExpansion is used, then a non-zero Hubble parameter is computed and corrections are brought to the propagation of all particles according to selected expanding metric.

Enumerator
NoExpansion
MasslessFRW
MassiveFRW
Exponential

Definition at line 164 of file forwarddeclarations.h.

                         {
  NoExpansion,
  MasslessFRW,
  MassiveFRW,
  Exponential,
};

NNbarTreatment

enum NNbarTreatment

strong

Treatment of N Nbar Annihilation.

Enumerator
NoAnnihilation	No Annihilation.
Resonances	Use intermediate Resonances.
Strings	Use string fragmentation.

Definition at line 172 of file forwarddeclarations.h.

                          {
  NoAnnihilation,
  Resonances,
  Strings,
};

ThermodynamicQuantity

enum ThermodynamicQuantity : char

strong

Represents thermodynamic quantities that can be printed out.

Enumerator
EckartDensity
Tmn
TmnLandau
LandauVelocity

Definition at line 182 of file forwarddeclarations.h.

                                 : char {
  EckartDensity,
  Tmn,
  TmnLandau,
  LandauVelocity,
};

IncludedReactions

enum IncludedReactions

The different groups of 2 to 2 reactions that one can include.

Enumerator
All
Elastic
NN_to_NR
NN_to_DR
KN_to_KN
KN_to_KDelta
Strangeness_exchange

Definition at line 190 of file forwarddeclarations.h.

                       {
  All = 50,
  Elastic = 0,
  NN_to_NR = 1,
  NN_to_DR = 2,
  KN_to_KN = 3,
  KN_to_KDelta = 4,
  Strangeness_exchange = 5,
};

ThermalizationAlgorithm

enum ThermalizationAlgorithm

strong

Defines the algorithm used for the forced thermalization.

For the description of algorithms see Oliinychenko:2016vkg. All of them intend to conserve the net baryon number, strangeness and electric charge, as well as energy. Mode sampling is the fastest, but least theoretically robust, unbiased BF is the slowest (even hangs completely from time to time), but it is also the most theoretically robust.

Enumerator
ModeSampling
BiasedBF
UnbiasedBF

Definition at line 212 of file forwarddeclarations.h.

                                   {
  ModeSampling,
  BiasedBF,
  UnbiasedBF,
};