gh::Tags Namespace Reference

Tags for the generalized harmonic formulation of Einstein equations. More...

Classes
struct	CharacteristicFields
struct	CharacteristicSpeeds
struct	ComputeLargestCharacteristicSpeed
	Computes the largest magnitude of the characteristic speeds. More...
struct	ConstraintEnergy
	Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More...
struct	ConstraintEnergyCompute
	Compute item to get combined energy in all constraints for the generalized harmonic evolution system. More...
struct	DerivLapseCompute
	Compute item to get spatial derivatives of lapse from the generalized harmonic variables and spacetime unit normal one-form. More...
struct	DerivShiftCompute
	Compute item to get spatial derivatives of the shift vector from generalized harmonic and geometric variables. More...
struct	DerivSpatialMetricCompute
	Compute item to get spatial derivatives of the spatial metric from the generalized harmonic spatial derivative variable. More...
struct	EvolvedFieldsFromCharacteristicFields
struct	ExtrinsicCurvatureCompute
	Compute item to get extrinsic curvature from generalized harmonic variables and the spacetime normal vector. More...
struct	FConstraint
	Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More...
struct	FConstraintCompute
	Compute item to get the F-constraint for the generalized harmonic evolution system. More...
struct	FourIndexConstraint
	Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More...
struct	FourIndexConstraintCompute
	Compute item to get the four-index constraint for the generalized harmonic evolution system. More...
struct	Gamma1Gamma2
	\(\gamma_1 \gamma_2\) constraint damping product More...
struct	Gamma1Plus1
	\(\gamma_1 + 1\) More...
struct	GaugeConstraint
	Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More...
struct	GaugeConstraintCompute
	Compute item to get the gauge constraint for the generalized harmonic evolution system. More...
struct	GaugeH
	Gauge source function for the generalized harmonic system. More...
struct	GaugeHImplicitFrom3p1QuantitiesCompute
	Compute item to get the implicit gauge source function from 3 + 1 quantities. More...
struct	HalfPhiTwoNormals
	\(0.5\Phi_{iab}n^an^b\) More...
struct	HalfPiTwoNormals
	\(0.5\Pi_{ab}n^an^b\) More...
struct	InitialGaugeH
	Initial value of the gauge source function for the generalized harmonic system. More...
struct	LargestCharacteristicSpeed
struct	MeshVelocityDotThreeIndexConstraint
	\(\v^i_g \mathcal{C}_{iab}\) More...
struct	NormalDotOneIndexConstraint
	\(n^a \mathcal{C}_a\) More...
struct	Phi
	Auxiliary variable which is analytically the spatial derivative of the spacetime metric. More...
struct	PhiCompute
	Compute item for the auxiliary variable \(\Phi_{iab}\) used by the generalized harmonic formulation of Einstein's equations. More...
struct	PhiFirstIndexUp
	\(\Phi^i{}_{ab}\) More...
struct	PhiOneNormal
	\(\Phi_{iab}n^a\) More...
struct	PhiThirdIndexUp
	\(\Phi_{ia}{}^b\) More...
struct	Pi
	Conjugate momentum to the spacetime metric. More...
struct	PiCompute
	Compute item the conjugate momentum \(\Pi_{ab}\) of the spacetime metric \( g_{ab} \). More...
struct	PiOneNormal
	\(\Pi_{ab}n^a\) More...
struct	PiSecondIndexUp
	\(\Pi_a{}^b\) More...
struct	SecondTimeDerivOfSpacetimeMetricCompute
	Compute item to get second time derivative of the spacetime metric from generalized harmonic and geometric variables. More...
struct	SetPiAndPhiFromConstraints
	DataBox tag for holding whether or not to set GH variables \(\Pi\) and \(\Phi\) from constraints. More...
struct	ShiftDotThreeIndexConstraint
	\(\beta^i \mathcal{C}_{iab}\) More...
struct	SpacetimeChristoffelFirstKindThirdIndexUp
	\(\Gamma_{ab}{}^c\) More...
struct	SpacetimeDerivGaugeH
	Spacetime derivatives of the gauge source function for the generalized harmonic system. More...
struct	SpacetimeDerivGaugeHCompute
	Compute item to get spacetime derivative of the gauge source function from its spatial and time derivatives. More...
struct	SpacetimeDerivInitialGaugeH
	Initial spacetime derivatives of the gauge source function for the generalized harmonic system. More...
struct	ThreeIndexConstraint
	Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More...
struct	ThreeIndexConstraintCompute
	Compute item to get the three-index constraint for the generalized harmonic evolution system. More...
struct	TimeDerivLapseCompute
	Compute item to get time derivative of lapse ( \(\alpha\)) from the generalized harmonic variables, lapse, shift and the spacetime unit normal 1-form. More...
struct	TimeDerivShiftCompute
	Compute item to get time derivative of the shift vector from the generalized harmonic and geometric variables. More...
struct	TimeDerivSpatialMetricCompute
	Compute item to get time derivative of the spatial metric from generalized harmonic and geometric variables. More...
struct	TraceExtrinsicCurvatureCompute
	Compute item to get the trace of extrinsic curvature from generalized harmonic variables and the spacetime normal vector. More...
struct	TwoIndexConstraint
	Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More...
struct	TwoIndexConstraintCompute
	Compute item to get the two-index constraint for the generalized harmonic evolution system. More...
struct	VMinus
struct	VPlus
struct	VSpacetimeMetric
	Tags corresponding to the characteristic fields of the generalized harmonic system. More...
struct	VZero

Detailed Description

Tags for the generalized harmonic formulation of Einstein equations.