File indexing completed on 2025-04-19 09:09:41
0001 #ifndef Analysis_Observables_Momentum_Tensor_H
0002 #define Analysis_Observables_Momentum_Tensor_H
0003
0004 #include "ATOOLS/Math/Vector.H"
0005 #include "ATOOLS/Math/Matrix.H"
0006 #include "ATOOLS/Phys/Particle_List.H"
0007
0008 namespace ANALYSIS {
0009 class Momentum_Tensor {
0010 protected:
0011 double m_power;
0012 double m_eigenvalues[3];
0013 ATOOLS::Vec3D m_eigenvectors[3];
0014 public:
0015 Momentum_Tensor(double power);
0016 void Calculate(const ATOOLS::Particle_List & pl);
0017 void Evaluate(const ATOOLS::Matrix<3> & m);
0018 double EigenValue(const int i){ return m_eigenvalues[i]; }
0019 const ATOOLS::Vec3D & EigenVector(const int i) { return m_eigenvectors[i]; }
0020 };
0021 }
0022
0023
0024 #endif
