SpECTRE  v2026.04.01
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gr::Tags::InverseSpacetimeMetricCompute< DataType, SpatialDim, Frame > Struct Template Reference

Compute item for inverse spacetime metric \(g^{ab}\) in terms of the lapse \(\alpha\), shift \(\beta^i\), and inverse spatial metric \(\gamma^{ij}\). More...

#include <InverseSpacetimeMetric.hpp>

Public Types

using argument_tags
using return_type = tnsr::AA<DataType, SpatialDim, Frame>
using base = InverseSpacetimeMetric<DataType, SpatialDim, Frame>
Public Types inherited from gr::Tags::InverseSpacetimeMetric< DataType, SpatialDim, Frame >
using type

Static Public Attributes

static constexpr auto function

Detailed Description

template<typename DataType, size_t SpatialDim, typename Frame>
struct gr::Tags::InverseSpacetimeMetricCompute< DataType, SpatialDim, Frame >

Compute item for inverse spacetime metric \(g^{ab}\) in terms of the lapse \(\alpha\), shift \(\beta^i\), and inverse spatial metric \(\gamma^{ij}\).

Details

Can be retrieved using gr::Tags::InverseSpacetimeMetric.

Member Typedef Documentation

◆ argument_tags

template<typename DataType, size_t SpatialDim, typename Frame>
using gr::Tags::InverseSpacetimeMetricCompute< DataType, SpatialDim, Frame >::argument_tags
Initial value:
tmpl::list<Lapse<DataType>, Shift<DataType, SpatialDim, Frame>,
Inverse of the spatial metric.
Definition Tags.hpp:32
Definition Tags.hpp:61

Member Data Documentation

◆ function

template<typename DataType, size_t SpatialDim, typename Frame>
auto gr::Tags::InverseSpacetimeMetricCompute< DataType, SpatialDim, Frame >::function
staticconstexpr
Initial value:
= static_cast<void (*)(
const Scalar<DataType>&, const tnsr::I<DataType, SpatialDim, Frame>&,
const tnsr::II<DataType, SpatialDim, Frame>&)>(
Require a pointer to not be a nullptr
Definition Gsl.hpp:197
void inverse_spacetime_metric(gsl::not_null< tnsr::AA< DataType, SpatialDim, Frame > * > inverse_spacetime_metric, const Scalar< DataType > &lapse, const tnsr::I< DataType, SpatialDim, Frame > &shift, const tnsr::II< DataType, SpatialDim, Frame > &inverse_spatial_metric)
Compute inverse spacetime metric from inverse spatial metric, lapse and shift.
Tensor< T, Symmetry<>, index_list<> > Scalar
Scalar type.
Definition TypeAliases.hpp:21

The documentation for this struct was generated from the following file:
  • src/PointwiseFunctions/GeneralRelativity/InverseSpacetimeMetric.hpp