SparseHamiltonian< Ham > Class Template Reference

#include <hamsparse.h>

Inheritance diagram for SparseHamiltonian< Ham >:

Collaboration diagram for SparseHamiltonian< Ham >:

Public Member Functions
	SparseHamiltonian (int L, int Nu, int Nd, double J, double U)
virtual	~SparseHamiltonian ()
void	BuildHam ()
void	BuildSparseHam ()
void	PrintSparse () const
void	PrintRawELL () const
virtual void	mvprod (double *, double *, double) const
double *	Umatrix () const

Protected Attributes
double *	Up_data
	The array to hold the data (ELL format) for the up hamiltonian. More...
double *	Down_data
	The array to hold the data (ELL format) for the down hamiltonian. More...
unsigned int *	Up_ind
	The array to hold the indices for the up hamiltonian. More...
unsigned int *	Down_ind
	The array to hold the indices for the down hamiltonian. More...
int	size_Up
	Maximum number of non zero elements in a row for the up hamiltonian. More...
int	size_Down
	Maximum number of non zero elements in a row for the down hamiltonian. More...

Detailed Description

template<class Ham>
class SparseHamiltonian< Ham >

Store the Hamiltonian for 1D Hubbard in the (sparse) ELL format

Author

Ward Poelmans wpoel.nosp@m.y86@.nosp@m.gmail.nosp@m..com

Definition at line 27 of file hamsparse.h.

Constructor & Destructor Documentation

template<class Ham >

SparseHamiltonian< Ham >::SparseHamiltonian	(	int	L,
		int	Nu,
		int	Nd,
		double	J,
		double	U
	)

Constructor of the SparseHamiltonian class

Parameters

L	Number of lattice sites
Nu	Number of Up Electrons
Nd	Number of Down Electrons
J	The hopping strengh
U	The onsite interaction strength

Definition at line 35 of file hamsparse.cpp.

template<class Ham >

SparseHamiltonian< Ham >::~SparseHamiltonian ( )

virtual

Destructor of the SparseHamiltonian class

Definition at line 52 of file hamsparse.cpp.

Member Function Documentation

template<class Ham >

void SparseHamiltonian< Ham >::BuildHam

(

)

Definition at line 68 of file hamsparse.cpp.

template<class Ham >

void SparseHamiltonian< Ham >::BuildSparseHam

(

)

Builds and fills the sparse hamiltonian

Definition at line 77 of file hamsparse.cpp.

template<class Ham >

void SparseHamiltonian< Ham >::mvprod ( double *  x, double *  y, double  alpha  ) const

virtual

Matrix vector product with (sparse) hamiltonian: y = ham*x + alpha*y

Parameters

x	the input vector
y	the output vector
alpha	the scaling value

Definition at line 259 of file hamsparse.cpp.

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template<class Ham >

void SparseHamiltonian< Ham >::PrintRawELL

(

)

const

Prints the Raw ELL array's.

Definition at line 206 of file hamsparse.cpp.

template<class Ham >

void SparseHamiltonian< Ham >::PrintSparse

(

)

const

Prints the Sparse Hamiltonian

Definition at line 166 of file hamsparse.cpp.

template<class Ham >

double * SparseHamiltonian< Ham >::Umatrix

(

)

const

Builds the interaction diagonal

Returns

pointer to interaction vector. You have to free this yourself

Definition at line 290 of file hamsparse.cpp.

Member Data Documentation

template<class Ham >

double* SparseHamiltonian< Ham >::Down_data

protected

The array to hold the data (ELL format) for the down hamiltonian.

Definition at line 50 of file hamsparse.h.

template<class Ham >

unsigned int* SparseHamiltonian< Ham >::Down_ind

protected

The array to hold the indices for the down hamiltonian.

Definition at line 55 of file hamsparse.h.

template<class Ham >

int SparseHamiltonian< Ham >::size_Down

protected

Maximum number of non zero elements in a row for the down hamiltonian.

Definition at line 60 of file hamsparse.h.

template<class Ham >

int SparseHamiltonian< Ham >::size_Up

protected

Maximum number of non zero elements in a row for the up hamiltonian.

Definition at line 58 of file hamsparse.h.

template<class Ham >

double* SparseHamiltonian< Ham >::Up_data

protected

The array to hold the data (ELL format) for the up hamiltonian.

Definition at line 48 of file hamsparse.h.

template<class Ham >

unsigned int* SparseHamiltonian< Ham >::Up_ind

protected

The array to hold the indices for the up hamiltonian.

Definition at line 53 of file hamsparse.h.

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

• hamsparse.h
• hamsparse.cpp