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SpECTRE
v2024.08.03
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The trace of the trace-free part of the extrinsic curvature. More...
#include <Tags.hpp>
Public Types | |
| using | type = Scalar< DataType > |
The trace of the trace-free part of the extrinsic curvature.
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.