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SpECTRE
v2025.08.19
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The Newman-Penrose spin coefficient \(\kappa\). In the choice of tetrad of [150], \(\kappa=0\). Therefore, this tag should never actually be used. It is declared here so it does not seem like it is "missing", and to document that any calculation involving \(\kappa\) should be simplified with \(\kappa=0\). More...
#include <Tags.hpp>
Public Types | |
| using | type = Scalar< SpinWeighted< ComplexDataVector,+1 > > |
The Newman-Penrose spin coefficient \(\kappa\). In the choice of tetrad of [150], \(\kappa=0\). Therefore, this tag should never actually be used. It is declared here so it does not seem like it is "missing", and to document that any calculation involving \(\kappa\) should be simplified with \(\kappa=0\).