#include <stag_scalars_s.h>

Inheritance diagram for Chroma::staggered_scalars:

Public Member Functions
void	compute (multi1d< LatticeStaggeredPropagator > &quark_props, int j_decay)

	staggered_scalars (int t_len, const multi1d< LatticeColorMatrix > &uin, Stag_shift_option type_of_shift_in=SYM_GAUGE_INVAR)

virtual	~staggered_scalars ()

Public Member Functions inherited from Chroma::staggered_hadron_corr
void	dump (int t_source, XMLWriter &xml_out)

void	binary_dump (int t_source, std::string start_name)

	staggered_hadron_corr (int t_len, int t_chan, const multi1d< LatticeColorMatrix > &uin, Stag_shift_option type_of_shift_in)

virtual	~staggered_hadron_corr ()

Static Private Attributes
static const int	no_scalar = 16

Additional Inherited Members
Protected Member Functions inherited from Chroma::staggered_hadron_corr
LatticeStaggeredPropagator	shift_deltaProp (multi1d< int > &delta, const LatticeStaggeredPropagator &src)

Protected Attributes inherited from Chroma::staggered_hadron_corr
multi2d< DComplex >	corr_fn

std::string	outer_tag

std::string	inner_tag

multi1d< std::string >	tag_names

multi1d< LatticeColorMatrix >	u

Detailed Description

Definition at line 14 of file stag_scalars_s.h.

Constructor & Destructor Documentation

◆ staggered_scalars()

Chroma::staggered_scalars::staggered_scalars	(	int	t_len,
		const multi1d< LatticeColorMatrix > &	uin,
		Stag_shift_option	type_of_shift_in = `SYM_GAUGE_INVAR`
	)

inline

Definition at line 25 of file stag_scalars_s.h.

References Chroma::i, Chroma::staggered_hadron_corr::inner_tag, no_scalar, Chroma::staggered_hadron_corr::outer_tag, Octave::tag(), and Chroma::staggered_hadron_corr::tag_names.

◆ ~staggered_scalars()

virtual Chroma::staggered_scalars::~staggered_scalars ( )

inlinevirtual

Definition at line 43 of file stag_scalars_s.h.

Member Function Documentation

◆ compute()

void Chroma::staggered_scalars::compute	(	multi1d< LatticeStaggeredPropagator > &	quark_props,
		int	j_decay
	)

virtual

staggeredScalars

This routine computes all 16 staggered scalars.

Caveats: i) It assumes that the propagators you give have been computed in some spatially fixed gauge eg the Coulomb Gauge.

ii) This means that there is only 8 propagators corresponding to the 8 corners of the spatial cube. The props come in an array whose single index std::maps lexicographically to the corners of the cube. ie: prop_index = 0, hypercube_coord (0,0,0,0) prop_index = 1, hypercube_coord (1,0,0,0) prop_index = 2, hypercube_coord (0,1,0,0)

essentially prop_index = x + 2*y + 4*z

    iii) The assumption is that you are working in 4d

Parameters:

 quark_props      -- The array of input propagators (Read)
 scalar_corr_fn     -- The 2d array of scalar correlation functions
                     (16, Nt)  (Write)

 j_decay          -- The time direction (has to be Nd-1 for now)
                     (Read)

Implements Chroma::staggered_hadron_corr.

Definition at line 72 of file stag_scalars_s.cc.

References Chroma::StagPhases::alpha(), Chroma::StagPhases::beta(), Chroma::staggered_hadron_corr::corr_fn, Chroma::deltaToPropIndex(), Chroma::i, j_decay, mu, Nd, nu, NUM_STAG_PIONS, NUM_STAG_PROPS, and Chroma::staggered_hadron_corr::shift_deltaProp().