ThePEG
2.1.5

The RhoDMatrix class is designed to implement the storage of the rho and D matrices which are required for the spin correlation algorithm. More...
#include <RhoDMatrix.h>
Public Member Functions  
Standard constructors and destructors.  
RhoDMatrix ()=default  
Default constructor with undefined spin.  
RhoDMatrix (PDT::Spin inspin, bool average=true)  
Standard constructor giving the spin as 2s+1. More...  
Access matrix elements.  
Complex  operator() (size_t ix, size_t iy) const 
Return an element of the matrix.  
Complex &  operator() (size_t ix, size_t iy) 
Set an element of the matrix.  
void  normalize () 
renormalise the matrix so it has unit trace  
Access the spin.  
PDT::Spin  iSpin () const 
Get the spin. More...  
Private Types  
enum  { MAXSPIN = 5 } 
Spin matrix size.  
Private Attributes  
PDT::Spin  _spin 
2s+1 for the particle.  
size_t  _ispin 
Storage of 2s+1 for speed.  
std::array< std::array< Complex, MAXSPIN >, MAXSPIN >  _matrix 
Storage for the matrix allowing up to spin 2 particles.  
Friends  
ostream &  operator<< (ostream &os, const RhoDMatrix &rd) 
Output the spin density matrix for debugging purposes.  
The RhoDMatrix class is designed to implement the storage of the rho and D matrices which are required for the spin correlation algorithm.
The matrix stores the spin as 2s+1.
Definition at line 28 of file RhoDMatrix.h.

inline 
Standard constructor giving the spin as 2s+1.
The matrix starts out averaged, unless the second argument is false, when it is zeroed.
Definition at line 43 of file RhoDMatrix.h.

inline 
Get the spin.
The spin is returned as 2J+1 in units of hbar/2.
Definition at line 100 of file RhoDMatrix.h.
References _spin, and operator<<.