SpECTRE  v2022.05.05
Ccz4::Tags::TraceATilde< DataType > Struct Template Reference

The trace of the trace-free part of the extrinsic curvature. More...

#include <Tags.hpp>

## Public Types

using type = Scalar< DataType >

## Detailed Description

template<typename DataType>
struct Ccz4::Tags::TraceATilde< DataType >

The trace of the trace-free part of the extrinsic curvature.

### Details

We define:

\begin{align} tr\tilde{A} &= \tilde{\gamma}^{ij} \tilde{A}_{ij} \end{align}

where $$\tilde{\gamma}^{ij}$$ is the inverse conformal spatial metric defined by Ccz4::Tags::InverseConformalMetric and $$\tilde{A}_{ij}$$ is the trace-free part of the extrinsic curvature defined by Ccz4::Tags::ATilde.

The documentation for this struct was generated from the following file:
• src/Evolution/Systems/Ccz4/Tags.hpp