ThePEG::RhoDMatrix Class Reference

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.
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
void	reset (bool average=true)
	Reset.

Access the spin.
enum	{ MAXSPIN = 7 }
	Spin matrix size. More...
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.
PDT::Spin	iSpin () const
	Get the spin.
ostream &	operator<< (ostream &os, const RhoDMatrix &rd)
	Output the spin density matrix for debugging purposes.

Detailed Description

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.

Author

Peter Richardson

Definition at line 28 of file RhoDMatrix.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

private

Spin matrix size.

Definition at line 135 of file RhoDMatrix.h.

Constructor & Destructor Documentation

RhoDMatrix()

ThePEG::RhoDMatrix::RhoDMatrix ( PDT::Spin  inspin, bool  average = true  )

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.

References _ispin, and _matrix.

Member Function Documentation

iSpin()

PDT::Spin ThePEG::RhoDMatrix::iSpin ( ) const

inline

Get the spin.

The spin is returned as 2J+1 in units of hbar/2.

Definition at line 112 of file RhoDMatrix.h.

References _spin.

normalize()

void ThePEG::RhoDMatrix::normalize ( )

inline

renormalise the matrix so it has unit trace

Definition at line 78 of file RhoDMatrix.h.

References _ispin, and _matrix.

operator()() [1/2]

Complex & ThePEG::RhoDMatrix::operator() ( size_t  ix, size_t  iy  )

inline

Set an element of the matrix.

Definition at line 69 of file RhoDMatrix.h.

References _ispin, and _matrix.

operator()() [2/2]

Complex ThePEG::RhoDMatrix::operator() ( size_t  ix, size_t  iy  ) const

inline

Return an element of the matrix.

Definition at line 60 of file RhoDMatrix.h.

References _ispin, and _matrix.

reset()

void ThePEG::RhoDMatrix::reset ( bool  average = true )

inline

Reset.

Definition at line 97 of file RhoDMatrix.h.

References _ispin, and _matrix.

Friends And Related Function Documentation

operator<<

ostream & operator<< ( ostream &  os, const RhoDMatrix &  rd  )

friend

Output the spin density matrix for debugging purposes.

Definition at line 147 of file RhoDMatrix.h.

Member Data Documentation

_ispin

size_t ThePEG::RhoDMatrix::_ispin

private

Storage of 2s+1 for speed.

Definition at line 130 of file RhoDMatrix.h.

Referenced by normalize(), operator()(), reset(), and RhoDMatrix().

_matrix

std::array<std::array<Complex,MAXSPIN>,MAXSPIN> ThePEG::RhoDMatrix::_matrix

private

Storage for the matrix allowing up to spin 2 particles.

Definition at line 142 of file RhoDMatrix.h.

Referenced by normalize(), operator()(), reset(), and RhoDMatrix().

_spin

PDT::Spin ThePEG::RhoDMatrix::_spin

private

2s+1 for the particle.

Definition at line 125 of file RhoDMatrix.h.

Referenced by iSpin().

---

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

• RhoDMatrix.h