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SpECTRE
v2026.04.01
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The CCZ4 temporary expression \(\tilde{A}_{ij} - \frac{1}{3} \tilde{\gamma}_{ij} tr \tilde{A}\). More...
#include <TempTags.hpp>
Public Types | |
| using | type = tnsr::ii<DataType, Dim, Frame> |
The CCZ4 temporary expression \(\tilde{A}_{ij} - \frac{1}{3} \tilde{\gamma}_{ij} tr \tilde{A}\).
Here, \(\tilde{A}_{ij}\) is the trace-free part of the extrinsic curvature defined by Ccz4::Tags::ATilde, \(tr \tilde{A}\) is its trace defined by Ccz4::Tags::TraceATilde, and \(\tilde{\gamma}_{ij}\) is the conformal spatial metric defined by Ccz4::Tags::ConformalMetric.