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SpECTRE
v2026.11.11
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The factors \(\alpha^i\) multiplying the radial and angular derivatives in the principal part of the equations. More...
#include <Tags.hpp>
Public Types | |
| using | type = tnsr::I<ComplexDataVector, 2> |
The factors \(\alpha^i\) multiplying the radial and angular derivatives in the principal part of the equations.
These are the factors \(\alpha^i\) that define the principal part of the equations and allow writing them in first-order flux form given by
\begin{equation}-\partial_i F^i + \beta \Psi_m + \gamma_i \partial_i \Psi_m = S_m \end{equation}
with the flux
\begin{equation}F^i = \alpha^i \partial_i \Psi_m \text{.} \end{equation}
They are set by the analytic data class (see ScalarSelfForce::AnalyticData::CircularOrbit).