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SpECTRE
v2026.06.09.01
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Tags for the generalized harmonic formulation of Einstein equations. More...
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| struct | VSpacetimeMetricSpeedCompute |
| Computes the spacetimemetric characteristic speed in SourceFrame. More... | |
| struct | VZeroSpeedCompute |
| Computes the zero characteristic speed in SourceFrame. More... | |
| struct | VPlusSpeedCompute |
| Computes the plus characteristic speed in SourceFrame. More... | |
| struct | VMinusSpeedCompute |
| Computes the minus characteristic speed in SourceFrame. More... | |
| struct | LargestCharacteristicSpeed |
| struct | ComputeLargestCharacteristicSpeed |
| Computes the largest magnitude of the characteristic speeds. More... | |
| struct | GaugeConstraintCompute |
| Compute item to get the gauge constraint for the generalized harmonic evolution system. More... | |
| struct | FConstraintCompute |
| Compute item to get the F-constraint for the generalized harmonic evolution system. More... | |
| struct | TwoIndexConstraintCompute |
| Compute item to get the two-index constraint for the generalized harmonic evolution system. More... | |
| struct | ThreeIndexConstraintCompute |
| Compute item to get the three-index constraint for the generalized harmonic evolution system. More... | |
| struct | FourIndexConstraintCompute |
| Compute item to get the four-index constraint for the generalized harmonic evolution system. More... | |
| struct | ConstraintEnergyCompute |
| Compute item to get combined energy in all constraints for the generalized harmonic evolution system. More... | |
| struct | Gamma1Gamma2 |
| \(\gamma_1 \gamma_2\) constraint damping product More... | |
| struct | HalfPiTwoNormals |
| \(0.5\Pi_{ab}n^an^b\) More... | |
| struct | NormalDotOneIndexConstraint |
| \(n^a \mathcal{C}_a\) More... | |
| struct | Gamma1Plus1 |
| \(\gamma_1 + 1\) More... | |
| struct | PiOneNormal |
| \(\Pi_{ab}n^a\) More... | |
| struct | HalfPhiTwoNormals |
| \(0.5\Phi_{iab}n^an^b\) More... | |
| struct | ShiftDotThreeIndexConstraint |
| \(\beta^i \mathcal{C}_{iab}\) More... | |
| struct | MeshVelocityDotThreeIndexConstraint |
| \(\v^i_g \mathcal{C}_{iab}\) More... | |
| struct | PhiOneNormal |
| \(\Phi_{iab}n^a\) More... | |
| struct | PiSecondIndexUp |
| \(\Pi_a{}^b\) More... | |
| struct | PhiFirstIndexUp |
| \(\Phi^i{}_{ab}\) More... | |
| struct | PhiThirdIndexUp |
| \(\Phi_{ia}{}^b\) More... | |
| struct | SpacetimeChristoffelFirstKindThirdIndexUp |
| \(\Gamma_{ab}{}^c\) More... | |
| struct | SetPiAndPhiFromConstraints |
| DataBox tag for holding whether or not to set GH variables \(\Pi\) and \(\Phi\) from constraints. More... | |
| struct | Pi |
| Conjugate momentum to the spacetime metric. More... | |
| struct | Phi |
| Auxiliary variable which is analytically the spatial derivative of the spacetime metric. More... | |
| struct | GaugeH |
| Gauge source function for the generalized harmonic system. More... | |
| struct | SpacetimeDerivGaugeH |
| Spacetime derivatives of the gauge source function for the generalized harmonic system. More... | |
| struct | InitialGaugeH |
| Initial value of the gauge source function for the generalized harmonic system. More... | |
| struct | SpacetimeDerivInitialGaugeH |
| Initial spacetime derivatives of the gauge source function for the generalized harmonic system. More... | |
| struct | VSpacetimeMetric |
| Tags corresponding to the characteristic fields of the generalized harmonic system. More... | |
| struct | VZero |
| struct | VPlus |
| struct | VMinus |
| struct | CharacteristicSpeeds |
| struct | VSpacetimeMetricSpeed |
| Characterisic speed as type tnsr::I, for use in observing in ElementLogical frame in terms of logical directions. More... | |
| struct | VZeroSpeed |
| Characterisic speed as type tnsr::I, for use in observing in ElementLogical frame in terms of logical directions. More... | |
| struct | VPlusSpeed |
| Characterisic speed as type tnsr::I, for use in observing in ElementLogical frame in terms of logical directions. More... | |
| struct | VMinusSpeed |
| Characterisic speed as type tnsr::I, for use in observing in ElementLogical frame in terms of logical directions. More... | |
| struct | CharacteristicFields |
| struct | EvolvedFieldsFromCharacteristicFields |
| struct | GaugeConstraint |
| Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More... | |
| struct | FConstraint |
| Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More... | |
| struct | TwoIndexConstraint |
| Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More... | |
| struct | ThreeIndexConstraint |
| Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More... | |
| struct | FourIndexConstraint |
| Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More... | |
| struct | ConstraintEnergy |
| Tags corresponding to various constraints of the generalized harmonic system, and their diagnostically useful combinations. More... | |
| struct | ConstraintGamma0 |
| Constraint dammping parameter \(\gamma_0\) for the generalized harmonic system (cf. [133]). More... | |
| struct | ConstraintGamma1 |
| Constraint dammping parameter \(\gamma_1\) for the generalized harmonic system (cf. [133]). More... | |
| struct | ConstraintGamma2 |
| Constraint dammping parameter \(\gamma_2\) for the generalized harmonic system (cf. [133]). More... | |
| struct | DampingFunctionGamma0 |
| A DampingFunction to compute the constraint damping parameter \(\gamma_0\). More... | |
| struct | DampingFunctionGamma1 |
| A DampingFunction to compute the constraint damping parameter \(\gamma_0\). More... | |
| struct | DampingFunctionGamma2 |
| A DampingFunction to compute the constraint damping parameter \(\gamma_0\). More... | |
| struct | ConstraintGamma0Compute |
| Computes the constraint damping parameter \(\gamma_0\) from the coordinates and a DampingFunction. More... | |
| struct | ConstraintGamma1Compute |
| Computes the constraint damping parameter \(\gamma_1\) from the coordinates and a DampingFunction. More... | |
| struct | ConstraintGamma2Compute |
| Computes the constraint damping parameter \(\gamma_2\) from the coordinates and a DampingFunction. More... | |
| struct | DerivSpatialMetricCompute |
| Compute item to get spatial derivatives of the spatial metric from the generalized harmonic spatial derivative variable. More... | |
| struct | Expansion1D |
| struct | Expansion1DCompute |
| Compute item for the 1D expansion. More... | |
| struct | ExtrinsicCurvatureCompute |
| Compute item to get extrinsic curvature from generalized harmonic variables and the spacetime normal vector. More... | |
| struct | TraceExtrinsicCurvatureCompute |
| Compute item to get the trace of extrinsic curvature from generalized harmonic variables and the spacetime normal vector. More... | |
| struct | GaugeHImplicitFrom3p1QuantitiesCompute |
| Compute item to get the implicit gauge source function from 3 + 1 quantities. More... | |
| struct | SpacetimeDerivGaugeHCompute |
| Compute item to get spacetime derivative of the gauge source function from its spatial and time derivatives. More... | |
| struct | PhiCompute |
| Compute item for the auxiliary variable \(\Phi_{iab}\) used by the generalized harmonic formulation of Einstein's equations. More... | |
| struct | PiCompute |
| Compute item the conjugate momentum \(\Pi_{ab}\) of the spacetime metric \( g_{ab} \). More... | |
| struct | SecondTimeDerivOfSpacetimeMetricCompute |
| Compute item to get second time derivative of the spacetime metric from generalized harmonic and geometric variables. 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 | 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... | |
Tags for the generalized harmonic formulation of Einstein equations.