#include <ultra_relativistic.h>

Inheritance diagram for UltraRelativisticSpecies:

Data Structures
struct	PerturbLayout

Public Member Functions
double	GetOmega0 () const override

double	GetRadiationOmega0 () const override

void	RegisterBackgroundIndices (int &index_bg) override

void	ComputeBackground (double a, const double pvecback_B, double pvecback) override

double	Rho (const double *pvecback) const override

double	P (const double *pvecback) const override

double	PPrime (double a, double H, const double pvecback_B, const double pvecback) const override

bool	IsFreestreaming () const override

void	WriteBackgroundColumnTitles (BackgroundColumnWriter &w) const override

void	WriteBackgroundData (const double *pvecback, BackgroundColumnWriter &w) const override

void	RegisterTransferSourceIndices (int &index_tp, const SourceRequestContext &ctx) override

std::unique_ptr< BaseSpecies::PerturbLayout >	CreatePerturbLayout () const override

void	RegisterPerturbationIndices (BaseSpecies::PerturbLayout &layout, perturb_vector pv, const precision ppr, int &index_pt, const perturb_workspace *ppw, int gauge) override

void	PerturbDerivs (const BaseSpecies::PerturbLayout &layout, double tau, const double y, double dy, const perturb_parameters_and_workspace &ppaw) const override

StressEnergyContribution	StressEnergy (const BaseSpecies::PerturbLayout &layout, const perturb_vector pv, const double y, const double pvecback, const perturb_workspace ppw) const override

void	FillSources (const BaseSpecies::PerturbLayout &layout, const double y, const double dy, PerturbSourceContext &ctx) const override

void	ApplyInitialConditions (const BaseSpecies::PerturbLayout &layout, double *y, const PerturbIcContext &ctx) override

void	PerturbSynchronousToNewtonian (const BaseSpecies::PerturbLayout &layout, double *y, const PerturbIcContext &ctx) override

void	MarkUsedInSources (const BaseSpecies::PerturbLayout &layout, const perturb_workspace ppw, int used_in_sources) const override

void	CopyPerturbationsAcrossSwitch (const BaseSpecies::PerturbLayout &old_layout, const BaseSpecies::PerturbLayout &new_layout, const double old_y, double new_y, const PerturbSwitchContext &ctx) const override

void	WriteOutputColumns (PerturbColumnWriter &writer, const PerturbationsModule &mod, file_format fmt, TransferColumnSection section=TransferColumnSection::all) const override

void	PrintVariables (PerturbColumnWriter &writer, double tau, const double y, const PerturbationsModule &mod, const perturb_workspace ppw) const override

Public Member Functions inherited from BaseSpecies
virtual void	SetBackgroundModule (const BackgroundModule *)

virtual void	SetThermodynamicsModule (const ThermodynamicsModule *)

virtual void	SetPerturbs (const perturbs *)

virtual std::optional< double >	GetParam (const std::string &) const

virtual void	RegisterIntegrationIndices (int &index_bi)

virtual void	SetBackgroundInitialConditions (const BackgroundICContext &ctx)

virtual void	BackgroundDerivs (double tau, const double y, double dy, const double *pvecback)

virtual void	FinalizeBackground (double a, double H, const double pvecback_B, double pvecback)

virtual double	FreestreamingRho (const double *pvecback) const

bool	IsPresent () const

virtual void	ProcessBackgroundTable (const double , int, int, const double )

virtual void	PerturbVectorDerivs (const PerturbLayout &, double, const double , double , const perturb_parameters_and_workspace &) const

virtual void	PerturbTensorDerivs (const PerturbLayout &, double, const double , double , const perturb_parameters_and_workspace &) const

virtual void	WriteTensorOutputColumnTitles (std::string &) const

virtual void	ContributeTensorGwSource (const PerturbLayout &, double, const double , perturb_workspace ) const

virtual double	RhoDotOverRho (const double *pvecback, double a_prime_over_a) const

virtual double	DarkRadiationRhoToday (const double *) const

virtual double	NeutrinoOmega0 () const

virtual double	NeffContribution (double) const

virtual void	PrintNeffInfo () const

virtual void	PrintMassInfo () const

virtual double	TensorMasslessRelativisticRho (const double *) const

virtual void	CheckUltraRelativisticAtIc (const double *, double) const

virtual bool	IsUltraRelativisticAtIc (const double *, double) const

virtual void	WarnIfTooHeavyForHalofit (double) const

virtual double	BackgroundAIni (double a_proposed, double) const

bool	ClustersAsMatterCached () const

virtual void	FinalizeMatterClassification ()

virtual bool	ClustersAsMatter () const

virtual bool	IsColdMatterSpecies () const

virtual bool	HasWarmMatter () const

Additional Inherited Members
Public Types inherited from BaseSpecies
enum class	EnergyType

Protected Member Functions inherited from BaseSpecies
void	ApplyFluidLikeNewtonianShift (double y, int idx_delta, int idx_theta, const double pvecback, const PerturbIcContext &ctx) const

Detailed Description

Ultra-relativistic neutrinos / relics (UR) species.

Background: rho_ur = Omega0_ur * H0^2 / a^4, p_ur = rho_ur / 3, dp/dloga = -4/3 * rho_ur. Perturbations: full Boltzmann hierarchy in l (delta, theta, shear, l3..l_max). Supports UFA (fluid approximation) and RSA (radiation streaming). Non-standard ceff2_ur and cvis2_ur terms from ppt->three_ceff2_ur etc.

Member Function Documentation

◆ GetOmega0()

double UltraRelativisticSpecies::GetOmega0 ( ) const

inlineoverridevirtual

Returns the species' contribution to Omega0 (used for budget closure during construction). For composites, this defaults to summing children. For decay-product species starting at zero, override returning 0.

Implements BaseSpecies.

◆ GetRadiationOmega0()

double UltraRelativisticSpecies::GetRadiationOmega0 ( ) const

inlineoverridevirtual

UR is radiation: its Omega0 seeds the early-time radiation density.

Reimplemented from BaseSpecies.

◆ RegisterBackgroundIndices()

void UltraRelativisticSpecies::RegisterBackgroundIndices ( int & index_bg )

overridevirtual

Claim consecutive slots in pvecback. Called once during background_indices(). Implementation must assign index_bg_rho_ (and any other needed indices) and increment index_bg accordingly.

Implements BaseSpecies.

◆ ComputeBackground()

void UltraRelativisticSpecies::ComputeBackground	(	double	a,
		const double *	pvecback_B,
		double *	pvecback
	)

overridevirtual

Compute species background quantities at scale factor a. pvecback_B is the current ODE integration vector. Write density (and any other owned quantities) into pvecback.

Implements BaseSpecies.

◆ Rho()

double UltraRelativisticSpecies::Rho ( const double * pvecback ) const

overridevirtual

Energy density at current background state.

Implements BaseSpecies.

◆ P()

double UltraRelativisticSpecies::P ( const double * pvecback ) const

overridevirtual

Pressure at current background state.

Implements BaseSpecies.

◆ PPrime()

double UltraRelativisticSpecies::PPrime	(	double	a,
		double	H,
		const double *	pvecback_B,
		const double *	pvecback
	)		const

overridevirtual

Post-Friedmann. This species' conformal-time pressure derivative p' (a' / a = a*H). pvecback_B is the ODE state (IN); pvecback is fully populated through H. Default 0 (matter / Lambda).

Reimplemented from BaseSpecies.

◆ IsFreestreaming()

bool UltraRelativisticSpecies::IsFreestreaming ( ) const

inlineoverridevirtual

True for species that are free-streaming and massless at IC time (deep radiation domination). Used to accumulate rho_nu / fracnu in perturbation IC setup. Static at construction time. Default: false.

Reimplemented from BaseSpecies.

◆ WriteBackgroundColumnTitles()

void UltraRelativisticSpecies::WriteBackgroundColumnTitles ( BackgroundColumnWriter & ) const

overridevirtual

Write this species' background column titles into writer. Called by BackgroundModule::background_output_titles(). Default: no-op (species with no background output need not override).

Reimplemented from BaseSpecies.

◆ WriteBackgroundData()

void UltraRelativisticSpecies::WriteBackgroundData	(	const double *	,
		BackgroundColumnWriter &
	)		const

overridevirtual

Write this species' background data values into writer. pvecback is the full background vector at the current time step. Called by BackgroundModule::background_output_data(). Default: no-op.

Reimplemented from BaseSpecies.

◆ RegisterTransferSourceIndices()

void UltraRelativisticSpecies::RegisterTransferSourceIndices	(	int &	,
		const SourceRequestContext &
	)

overridevirtual

Register this species' transfer-source (index_tp) slots. Set once in perturb_indices_of_perturbs() before the k-loop; mirrors RegisterBackgroundIndices (k-independent, cached in a plain species member). Takes no PerturbLayout — that absence marks it as non-per-k state. Default: no-op (species that emit no transfer functions).

Reimplemented from BaseSpecies.

◆ CreatePerturbLayout()

std::unique_ptr< BaseSpecies::PerturbLayout > UltraRelativisticSpecies::CreatePerturbLayout ( ) const

inlineoverridevirtual

Produce a fresh layout for this species. Called once per pv during perturb_vector_init, before Register*PerturbationIndices. Default: empty base PerturbLayout (suitable for species with no perturbation slots, or as a placeholder during migration).

Reimplemented from BaseSpecies.

◆ RegisterPerturbationIndices()

void UltraRelativisticSpecies::RegisterPerturbationIndices	(	BaseSpecies::PerturbLayout &	layout,
		perturb_vector *	pv,
		const precision *	ppr,
		int &	index_pt,
		const perturb_workspace *	ppw,
		int	gauge
	)

overridevirtual

Registers delta_ur, theta_ur, shear_ur, and (when UFA is off) l3..l_max_ur.

Reimplemented from BaseSpecies.

◆ PerturbDerivs()

void UltraRelativisticSpecies::PerturbDerivs	(	const BaseSpecies::PerturbLayout &	layout,
		double	tau,
		const double *	y,
		double *	dy,
		const perturb_parameters_and_workspace &	ppaw
	)		const

overridevirtual

Contribute to dy for the scalar perturbation ODE at conformal time tau. The PerturbScalarContext inside ppaw->ppw has pre-computed metric terms, cross-species state (delta_g, theta_g, theta_b, ...), and approximation flags. The layout is this species' PerturbLayout slot (ppw->pv->species_layouts[i]); composites receive their own layout and pass nested sub-layouts to children.

Implements BaseSpecies.

◆ StressEnergy()

BaseSpecies::StressEnergyContribution UltraRelativisticSpecies::StressEnergy	(	const BaseSpecies::PerturbLayout &	layout,
		const perturb_vector *	pv,
		const double *	y,
		const double *	pvecback,
		const perturb_workspace *	ppw
	)		const

overridevirtual

All scalar stress-energy perturbations in one call.

Implements BaseSpecies.

◆ FillSources()

void UltraRelativisticSpecies::FillSources	(	const BaseSpecies::PerturbLayout &	,
		const double *	,
		const double *	,
		PerturbSourceContext &
	)		const

overridevirtual

Write per-k, per-tau source values for this species into the source table. Called in perturb_sources_member() after metric/temperature sources are set. Use ctx.p_mod->SetSourceValue(ctx.index_md, ctx.index_ic, ctx.p_mod->index_tp_XXX_, ctx.index_tau, ctx.index_k, value). All addressing (index_md, index_ic, index_k, index_tau) is in ctx. Default: no-op.

Reimplemented from BaseSpecies.

◆ ApplyInitialConditions()

void UltraRelativisticSpecies::ApplyInitialConditions	(	const BaseSpecies::PerturbLayout &	,
		double *	,
		const PerturbIcContext &
	)

overridevirtual

Write synchronous-gauge initial conditions for this species into y[]. y[] == ppw->pv->y. The module pre-computes ctx.delta_g_ic, ctx.delta_ur, etc. Guard each IC type: if (ctx.index_ic == ctx.p_mod->index_ic_ad_) { ... } Newtonian gauge transformation is handled by the module after this loop. Default: no-op.

Reimplemented from BaseSpecies.

◆ PerturbSynchronousToNewtonian()

void UltraRelativisticSpecies::PerturbSynchronousToNewtonian	(	const BaseSpecies::PerturbLayout &	,
		double *	,
		const PerturbIcContext &
	)

overridevirtual

Transform this species' own perturbation variables from synchronous to Newtonian gauge, in place in y[]. Called by the module after alpha is known (ctx.alpha / ctx.alpha_prime filled). The synchronous IC is already in y[] (ApplyInitialConditions runs in both gauges), so this is a pure shift/re-seed. Default: no-op (species with no perturbed variables, e.g. cosmological constant).

Reimplemented from BaseSpecies.

◆ MarkUsedInSources()

void UltraRelativisticSpecies::MarkUsedInSources	(	const BaseSpecies::PerturbLayout &	layout,
		const perturb_workspace *	ppw,
		int *	used_in_sources
	)		const

overridevirtual

Scalar mode: UR l>=3 multipoles not needed in sources when both rsa and ufa are off.

Reimplemented from BaseSpecies.

◆ CopyPerturbationsAcrossSwitch()

void UltraRelativisticSpecies::CopyPerturbationsAcrossSwitch	(	const BaseSpecies::PerturbLayout &	old_layout,
		const BaseSpecies::PerturbLayout &	new_layout,
		const double *	old_y,
		double *	new_y,
		const PerturbSwitchContext &	ctx
	)		const

overridevirtual

Copy UR perturbations across an approximation switch (UFA on/off transition).

Reimplemented from BaseSpecies.

◆ WriteOutputColumns()

void UltraRelativisticSpecies::WriteOutputColumns	(	PerturbColumnWriter &	,
		const PerturbationsModule &	,
		file_format	,
		BaseSpecies::TransferColumnSection	= `TransferColumnSection::all`
	)		const

overridevirtual

Append this species' output columns (delta, theta) to writer. Called from perturb_output_titles (title mode) and perturb_output_data (data mode). In class_format, the module may call this separately for density and velocity sections to preserve the historical transfer-column ordering. Use writer.Add(title, mod.index_tp_XXX_, active) — writer looks up tk[tp_index].

Reimplemented from BaseSpecies.

◆ PrintVariables()

void UltraRelativisticSpecies::PrintVariables	(	PerturbColumnWriter &	,
		double	,
		const double *	,
		const PerturbationsModule &	,
		const perturb_workspace *
	)		const

overridevirtual

Append this species' time-evolution variables to writer. Called from perturb_prepare_k_output (title mode, tau=0/y=nullptr/ppw=nullptr) and perturb_print_variables_member (data mode). Guard computation behind: if (!writer.IsTitleMode()) { ... compute ... } Use writer.Add(title, computed_value, active).

Reimplemented from BaseSpecies.

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

ultra_relativistic.h
ultra_relativistic.cpp

Data Structures

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ GetOmega0()

◆ GetRadiationOmega0()

◆ RegisterBackgroundIndices()

◆ ComputeBackground()

◆ Rho()

◆ P()

◆ PPrime()

◆ IsFreestreaming()

◆ WriteBackgroundColumnTitles()

◆ WriteBackgroundData()

◆ RegisterTransferSourceIndices()

◆ CreatePerturbLayout()

◆ RegisterPerturbationIndices()

◆ PerturbDerivs()

◆ StressEnergy()

◆ FillSources()

◆ ApplyInitialConditions()

◆ PerturbSynchronousToNewtonian()

◆ MarkUsedInSources()

◆ CopyPerturbationsAcrossSwitch()

◆ WriteOutputColumns()

◆ PrintVariables()