Typedefs
typedef std::bitset< 10 >	ReactionsBitSet
	Container for the 2 to 2 reactions in the code. More...

typedef std::bitset< 4 >	MultiParticleReactionsBitSet
	Container for the n to m reactions in the code. More...

Enumerations
enum class	CalculationFrame { CenterOfVelocity , CenterOfMass , FixedTarget }
	The calculation frame. More...

enum class	FermiMotion { Off , On , Frozen }
	Option to use Fermi Motion. More...

enum class	Sampling { Uniform , Quadratic , Custom }
	Possible methods of impact parameter sampling. More...

enum class	DerivativesMode { CovariantGaussian , FiniteDifference , Off }
	Modes of calculating the gradients. More...

enum class	RestFrameDensityDerivativesMode { On , Off }
	Modes of calculating the gradients: whether to calculate the rest frame density derivatives. More...

enum class	FieldDerivativesMode { ChainRule , Direct }
	Modes of calculating the field gradients: chain rule or direct. More...

enum class	SmearingMode { CovariantGaussian , Discrete , Triangular }
	Modes of smearing. More...

enum class	TimeStepMode : char { None , Fixed }
	The time step mode. More...

enum class	BoxInitialCondition { ThermalMomentaBoltzmann , ThermalMomentaQuantum , PeakedMomenta }
	Initial condition for a particle in a box. More...

enum class	SphereInitialCondition { ThermalMomentaBoltzmann , ThermalMomentaQuantum , IC_ES , IC_1M , IC_2M , IC_Massive }
	Initial condition for a particle in a sphere. More...

enum class	ExpansionMode { NoExpansion , MasslessFRW , MassiveFRW , Exponential }
	Defines properties of expansion for the metric (e.g. More...

enum class	NNbarTreatment { NoAnnihilation , Resonances , TwoToFive , Strings }
	Treatment of N Nbar Annihilation. More...

enum class	ThermodynamicQuantity : char { EckartDensity , Tmn , TmnLandau , LandauVelocity , j_QBS }
	Represents thermodynamic quantities that can be printed out. More...

enum class	CollisionCriterion { Geometric , Stochastic , Covariant }
	Criteria used to check collisions. More...

enum class	OutputOnlyFinal { Yes , No , IfNotEmpty }
	Whether and when only final state particles should be printed. 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 , NNbar = 6 , PiDeuteron_to_NN = 7 , PiDeuteron_to_pidprime = 8 , NDeuteron_to_Ndprime = 9 }
	The different groups of 2 to 2 reactions that one can include. More...

enum	IncludedMultiParticleReactions { Meson_3to1 = 0 , Deuteron_3to2 = 1 , NNbar_5to2 = 2 , A3_Nuclei_4to2 = 3 }
	The different groups of multi-particle reactions that one can include. More...

enum class	ThermalizationAlgorithm { ModeSampling , BiasedBF , UnbiasedBF }
	Defines the algorithm used for the forced thermalization. More...

enum class	EventCounting { FixedNumber , MinimumNonEmpty , Invalid }
	Defines how the number of events is determined. More...

Typedef Documentation

◆ ReactionsBitSet

typedef std::bitset<10> ReactionsBitSet

Container for the 2 to 2 reactions in the code.

Definition at line 267 of file forwarddeclarations.h.

◆ MultiParticleReactionsBitSet

typedef std::bitset<4> MultiParticleReactionsBitSet

Container for the n to m reactions in the code.

Definition at line 278 of file forwarddeclarations.h.

Enumeration Type Documentation

◆ CalculationFrame

enum CalculationFrame

strong

The calculation frame.

Enumerator
CenterOfVelocity
CenterOfMass
FixedTarget

Definition at line 87 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 94 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 104 of file forwarddeclarations.h.

                     {
   Uniform,
   Quadratic,
   Custom,
 };

◆ DerivativesMode

enum DerivativesMode

strong

Modes of calculating the gradients.

Enumerator
CovariantGaussian
FiniteDifference
Off

Definition at line 114 of file forwarddeclarations.h.

                            {
   CovariantGaussian,
   FiniteDifference,
   Off,
 };

◆ RestFrameDensityDerivativesMode

enum RestFrameDensityDerivativesMode

strong

Modes of calculating the gradients: whether to calculate the rest frame density derivatives.

Enumerator
On
Off

Definition at line 124 of file forwarddeclarations.h.

◆ FieldDerivativesMode

enum FieldDerivativesMode

strong

Modes of calculating the field gradients: chain rule or direct.

The modes only make sense for the VDF potentials.

Enumerator
ChainRule
Direct

Definition at line 133 of file forwarddeclarations.h.

                                 {
   ChainRule,
   Direct,
 };

◆ SmearingMode

enum SmearingMode

strong

Modes of smearing.

Enumerator
CovariantGaussian
Discrete
Triangular

Definition at line 139 of file forwarddeclarations.h.

                         {
   CovariantGaussian,
   Discrete,
   Triangular,
 };

◆ 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 146 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
ThermalMomentaBoltzmann
ThermalMomentaQuantum
PeakedMomenta

Definition at line 164 of file forwarddeclarations.h.

                                {
   ThermalMomentaBoltzmann,
   ThermalMomentaQuantum,
   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 [6]

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
ThermalMomentaBoltzmann
ThermalMomentaQuantum
IC_ES
IC_1M
IC_2M
IC_Massive

Definition at line 183 of file forwarddeclarations.h.

                                   {
   ThermalMomentaBoltzmann,
   ThermalMomentaQuantum,
   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 200 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.
TwoToFive	Directly create 5 pions, use with multi-particle reactions.
Strings	Use string fragmentation.

Definition at line 208 of file forwarddeclarations.h.

                           {
   NoAnnihilation,
   Resonances,
   TwoToFive,
   Strings,
 };

◆ ThermodynamicQuantity

enum ThermodynamicQuantity : char

strong

Represents thermodynamic quantities that can be printed out.

Enumerator
EckartDensity
Tmn
TmnLandau
LandauVelocity
j_QBS

Definition at line 222 of file forwarddeclarations.h.

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

◆ CollisionCriterion

enum CollisionCriterion

strong

Criteria used to check collisions.

Enumerator
Geometric	(Default) geometric criterion.
Stochastic	Stochastic Criteiron.
Covariant	Covariant Criterion.

Definition at line 231 of file forwarddeclarations.h.

                               {
   Geometric,
   Stochastic,
   Covariant
 };

◆ OutputOnlyFinal

enum OutputOnlyFinal

strong

Whether and when only final state particles should be printed.

Enumerator
Yes	Print only final-state particles.
No	Print initial, intermediate and final-state particles.
IfNotEmpty	Print only final-state particles, and those only if the event is not empty.

Definition at line 241 of file forwarddeclarations.h.

                            {
   Yes,
   No,
   IfNotEmpty,
 };

◆ 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
NNbar
PiDeuteron_to_NN
PiDeuteron_to_pidprime
NDeuteron_to_Ndprime

Definition at line 252 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,
   NNbar = 6,
   PiDeuteron_to_NN = 7,
   PiDeuteron_to_pidprime = 8,
   NDeuteron_to_Ndprime = 9,
 };

◆ IncludedMultiParticleReactions

enum IncludedMultiParticleReactions

The different groups of multi-particle reactions that one can include.

Enumerator
Meson_3to1
Deuteron_3to2
NNbar_5to2
A3_Nuclei_4to2

Definition at line 270 of file forwarddeclarations.h.

                                     {
   Meson_3to1 = 0,
   Deuteron_3to2 = 1,
   NNbar_5to2 = 2,
   A3_Nuclei_4to2 = 3,
 };

◆ ThermalizationAlgorithm

enum ThermalizationAlgorithm

strong

Defines the algorithm used for the forced thermalization.

For the description of algorithms see Oliinychenko:2016vkg [38]. 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 289 of file forwarddeclarations.h.

                                    {
   ModeSampling,
   BiasedBF,
   UnbiasedBF,
 };

◆ EventCounting

enum EventCounting

strong

Defines how the number of events is determined.

For FixedNumber the desired number of events is simulated disregarding of wether an interaction took place. For MinimumNonEmpty Events will be simulated until there are at least a given number of ensembles in which an interaction took place.

Enumerator
FixedNumber
MinimumNonEmpty
Invalid

Definition at line 302 of file forwarddeclarations.h.

                          {
   FixedNumber,
   MinimumNonEmpty,
   Invalid,
 };

Typedefs

Enumerations

Typedef Documentation

◆ ReactionsBitSet

◆ MultiParticleReactionsBitSet

Enumeration Type Documentation

◆ CalculationFrame

◆ FermiMotion

◆ Sampling

◆ DerivativesMode

◆ RestFrameDensityDerivativesMode

◆ FieldDerivativesMode

◆ SmearingMode

◆ TimeStepMode

◆ BoxInitialCondition

◆ SphereInitialCondition

◆ ExpansionMode

◆ NNbarTreatment

◆ ThermodynamicQuantity

◆ CollisionCriterion

◆ OutputOnlyFinal

◆ IncludedReactions

◆ IncludedMultiParticleReactions

◆ ThermalizationAlgorithm

◆ EventCounting