Extracts physical properties from Solver::ChebyshevExpander. More...

#include <ChebyshevExpander.h>

Inheritance diagram for TBTK::PropertyExtractor::ChebyshevExpander:

Public Member Functions
	ChebyshevExpander (Solver::ChebyshevExpander &cSolver)

virtual	~ChebyshevExpander ()

virtual void	setEnergyWindow (double lowerBound, double upperBound, int energyResolution)

Property::GreensFunction	calculateGreensFunction (Index to, Index from, Property::GreensFunction::Type type=Property::GreensFunction::Type::Retarded)

Property::GreensFunction	calculateGreensFunction (std::vector< std::vector< Index >> patterns, Property::GreensFunction::Type type=Property::GreensFunction::Type::Retarded)

Property::GreensFunction	calculateGreensFunctions (std::vector< Index > &to, Index from, Property::GreensFunction::Type type=Property::GreensFunction::Type::Retarded)

virtual std::complex< double >	calculateExpectationValue (Index to, Index from)

virtual Property::Density	calculateDensity (Index pattern, Index ranges)

virtual Property::Density	calculateDensity (std::vector< Index > patterns)

virtual Property::Magnetization	calculateMagnetization (Index pattern, Index ranges)

virtual Property::Magnetization	calculateMagnetization (std::vector< Index > patterns)

virtual Property::LDOS	calculateLDOS (Index pattern, Index ranges)

virtual Property::LDOS	calculateLDOS (std::vector< Index > patterns)

virtual Property::SpinPolarizedLDOS	calculateSpinPolarizedLDOS (Index pattern, Index ranges)

virtual Property::SpinPolarizedLDOS	calculateSpinPolarizedLDOS (std::vector< Index > patterns)

Public Member Functions inherited from TBTK::PropertyExtractor::PropertyExtractor
	PropertyExtractor ()

virtual	~PropertyExtractor ()

virtual void	setEnergyWindow (int lowerFermionicMatsubaraEnergyIndex, int upperFermionicMatsubaraEnergyIndex, int lowerBosonicMatsubaraEnergyIndex, int upperBosonicMatsubaraEnergyIndex)

virtual void	setEnergyInfinitesimal (double energyInfinitesimal)

virtual Property::DOS	calculateDOS ()

virtual Property::DOS	sampleDOS (unsigned int numSamples, const std::vector< Index > &patterns={}, unsigned int seed=time(nullptr))

virtual double	calculateEntropy ()

Additional Inherited Members
Protected Types inherited from TBTK::PropertyExtractor::PropertyExtractor
enum	EnergyType { Real, Matsubara }

Protected Member Functions inherited from TBTK::PropertyExtractor::PropertyExtractor
EnergyType	getEnergyType () const

int	getEnergyResolution () const

double	getLowerBound () const

double	getUpperBound () const

int	getLowerFermionicMatsubaraEnergyIndex () const

int	getUpperFermionicMatsubaraEnergyIndex () const

int	getLowerBosonicMatsubaraEnergyIndex () const

int	getUpperBosonicMatsubaraEnergyIndex () const

double	getEnergyInfinitesimal () const

template<typename DataType >
void	calculate (void(callback)(PropertyExtractor cb_this, Property::Property &property, const Index &index, int offset, Information &information), Property::AbstractProperty< DataType > &property, Index pattern, const Index &ranges, int currentOffset, int offsetMultiplier, Information &information)

template<typename DataType >
void	calculate (void(callback)(PropertyExtractor cb_this, Property::Property &property, const Index &index, int offset, Information &information), const IndexTree &allIndices, const IndexTree &memoryLayout, Property::AbstractProperty< DataType > &abstractProperty, Information &information)

void	ensureCompliantRanges (const Index &pattern, Index &ranges)

std::vector< int >	getLoopRanges (const Index &pattern, const Index &ranges)

IndexTree	generateIndexTree (std::vector< Index > patterns, const HoppingAmplitudeSet &hoppingAmplitudeSet, bool keepSummationWildcards, bool keepSpinWildcards)

Detailed Description

Extracts physical properties from Solver::ChebyshevExpander.

The PropertyExtractor::ChebyshevExpander extracts Properties from the Solver::ChebyshevExpander.

Example

#include "TBTK/Model.h"
#include "TBTK/Models/SquareLattice.h"
#include "TBTK/PropertyExtractor/ChebyshevExpander.h"
#include "TBTK/Solver/ChebyshevExpander.h"
#include "TBTK/Streams.h"
#include "TBTK/TBTK.h"
#include "TBTK/Visualization/MatPlotLib/Plotter.h"
 
using namespace TBTK;
using namespace Visualization::MatPlotLib;
 
int main(){
    Initialize();
 
    const unsigned int SIZE_X = 100;
    const unsigned int SIZE_Y = 100;
    double t = 1;
    Model model = Models::SquareLattice({SIZE_X, SIZE_Y}, {0, t});
    model.construct();
 
    Solver::ChebyshevExpander solver;
    solver.setModel(model);
    solver.setScaleFactor(10);
    solver.setCalculateCoefficientsOnGPU(false);
    solver.setGenerateGreensFunctionsOnGPU(false);
    solver.setUseLookupTable(true);
    solver.setNumCoefficients(200);
 
    const double LOWER_BOUND = -5;
    const double UPPER_BOUND = 5;
    const int RESOLUTION = 200;
    PropertyExtractor::ChebyshevExpander propertyExtractor(solver);
    propertyExtractor.setEnergyWindow(
        LOWER_BOUND,
        UPPER_BOUND,
        RESOLUTION
    );
 
    Property::LDOS ldos = propertyExtractor.calculateLDOS({{50, 50}});
    Streams::out << ldos << "\n";
 
    Plotter plotter;
    plotter.plot({50, 50}, ldos);
    plotter.save("figures/LDOS.png");
}

Output

LDOS
    Number of sites: 1
    Lower bound: -5 eV (-5 n.u.)
    Upper bound: 5 eV (5 n.u.)
    Resolution: 200

Constructor & Destructor Documentation

◆ ChebyshevExpander()

TBTK::PropertyExtractor::ChebyshevExpander::ChebyshevExpander ( Solver::ChebyshevExpander & cSolver )

Constructor.

◆ ~ChebyshevExpander()

virtual TBTK::PropertyExtractor::ChebyshevExpander::~ChebyshevExpander ( )

virtual

Destructor.

Member Function Documentation

◆ calculateDensity() [1/2]

virtual Property::Density TBTK::PropertyExtractor::ChebyshevExpander::calculateDensity	(	Index	pattern,
		Index	ranges
	)

virtual

Overrides PropertyExtractor::calculateDensity().

Reimplemented from TBTK::PropertyExtractor::PropertyExtractor.

◆ calculateDensity() [2/2]

virtual Property::Density TBTK::PropertyExtractor::ChebyshevExpander::calculateDensity ( std::vector< Index > patterns )

virtual

Overrides PropertyExtractor::calculateDensity().

Reimplemented from TBTK::PropertyExtractor::PropertyExtractor.

◆ calculateExpectationValue()

virtual std::complex<double> TBTK::PropertyExtractor::ChebyshevExpander::calculateExpectationValue	(	Index	to,
		Index	from
	)

virtual

Overrides PropertyExtractor::calculateExpectationValue().

Reimplemented from TBTK::PropertyExtractor::PropertyExtractor.

◆ calculateGreensFunction() [1/2]

Property::GreensFunction TBTK::PropertyExtractor::ChebyshevExpander::calculateGreensFunction	(	Index	to,
		Index	from,
		Property::GreensFunction::Type	type = `Property::GreensFunction::Type::Retarded`
	)

Calculate Green's function.

◆ calculateGreensFunction() [2/2]

Property::GreensFunction TBTK::PropertyExtractor::ChebyshevExpander::calculateGreensFunction	(	std::vector< std::vector< Index >>	patterns,
		Property::GreensFunction::Type	type = `Property::GreensFunction::Type::Retarded`
	)

Calculate Green's function for a range of 'to'-indices.

◆ calculateGreensFunctions()

Property::GreensFunction TBTK::PropertyExtractor::ChebyshevExpander::calculateGreensFunctions	(	std::vector< Index > &	to,
		Index	from,
		Property::GreensFunction::Type	type = `Property::GreensFunction::Type::Retarded`
	)