SpECTRE  v2024.05.11
hydro::Tags::QuadrupoleMoment< DataType, Dim, Fr > Struct Template Reference

Tag containing the quadrupole moment. More...

#include <QuadrupoleFormula.hpp>

Public Types

using type = tnsr::ii< DataType, Dim, Fr >
 

Detailed Description

template<typename DataType, size_t Dim, typename Fr = Frame::Inertial>
struct hydro::Tags::QuadrupoleMoment< DataType, Dim, Fr >

Tag containing the quadrupole moment.

The quadrupole moment is defined as \(\tilde{D} x^i x^j\) (equation 21 of [164]), with \(\tilde{D}=\sqrt{\gamma}\rho W\), \(W\) being the Lorentz factor, \(\gamma\) being the determinant of the spatial metric, and \(x\) the coordinates in Frame Fr.


The documentation for this struct was generated from the following file: