MomBasis Class Reference

#include <helpers.h>

Public Member Functions
	MomBasis (int L, int Nu, int Nd)
virtual	~MomBasis ()
myint	getUp (int K, int index) const
myint	getDown (int K, int index) const
int	findUp (int K, myint ket) const
int	findDown (int K, myint ket) const
int	getdim () const
int	getdimK (int K) const
void	Print () const
void	getvec (int K, int i, myint &upket, myint &downket) const
int	getL () const
int	getNu () const
int	getNd () const
const std::pair< myint, myint > &	operator() (int K, int index) const
std::shared_ptr< class KBlock >	getBlock (int K) const

Private Member Functions
void	BuildBase ()

Private Attributes
int	L
	number of sites More...
int	Nu
	number of up electrons More...
int	Nd
	number of up electrons More...
int	dim
	dimension of the hilbert space More...
std::vector< std::shared_ptr < class KBlock > >	basisblocks

Detailed Description

Stores a full basis in the momentum space. Stores a list of L KBlock classes, each class holding the basis of one K block.

Definition at line 85 of file helpers.h.

Constructor & Destructor Documentation

MomBasis::MomBasis	(	int	L,
		int	Nu,
		int	Nd
	)

Build a momentum basis for specified system

Parameters

L	chain length
Nu	number of spin ups
Nd	number of spin downs

Definition at line 295 of file helpers.cpp.

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virtual MomBasis::~MomBasis ( )

inlinevirtual

Definition at line 90 of file helpers.h.

Member Function Documentation

void MomBasis::BuildBase ( )

private

Definition at line 427 of file helpers.cpp.

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int MomBasis::findDown	(	int	K,
		myint	ket
	)		const

Find the index of a basisvector for spin down

Parameters

K	the K block index
ket	the basisvector

Returns

the index of ket

Definition at line 357 of file helpers.cpp.

int MomBasis::findUp	(	int	K,
		myint	ket
	)		const

Find the index of a basisvector for spin up

Parameters

K	the K block index
ket	the basisvector

Returns

the index of ket

Definition at line 340 of file helpers.cpp.

std::shared_ptr< class KBlock > MomBasis::getBlock

(

int

K

)

const

Definition at line 421 of file helpers.cpp.

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int MomBasis::getdim

(

)

const

Definition at line 368 of file helpers.cpp.

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int MomBasis::getdimK

(

int

K

)

const

Parameters

K	the K block

Returns

the dimension of K block K

Definition at line 377 of file helpers.cpp.

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myint MomBasis::getDown	(	int	K,
		int	index
	)		const

Get a spin down basisvector in block K with index=index

Parameters

K	the K block index
index	the index within the K block

Returns

the spin down basisvector

Definition at line 327 of file helpers.cpp.

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int MomBasis::getL

(

)

const

Definition at line 383 of file helpers.cpp.

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int MomBasis::getNd

(

)

const

Definition at line 393 of file helpers.cpp.

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int MomBasis::getNu

(

)

const

Definition at line 388 of file helpers.cpp.

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myint MomBasis::getUp	(	int	K,
		int	index
	)		const

Get a spin up basisvector in block K with index=index

Parameters

K	the K block index
index	the index within the K block

Returns

the spin up basisvector

Definition at line 314 of file helpers.cpp.

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void MomBasis::getvec	(	int	K,
		int	i,
		myint &	upket,
		myint &	downket
	)		const

Definition at line 408 of file helpers.cpp.

const std::pair< myint, myint > & MomBasis::operator()	(	int	K,
		int	index
	)		const

Definition at line 415 of file helpers.cpp.

void MomBasis::Print

(

)

const

Definition at line 398 of file helpers.cpp.

Member Data Documentation

std::vector< std::shared_ptr<class KBlock> > MomBasis::basisblocks

private

Definition at line 131 of file helpers.h.

int MomBasis::dim

private

dimension of the hilbert space

Definition at line 129 of file helpers.h.

int MomBasis::L

private

number of sites

Definition at line 122 of file helpers.h.

int MomBasis::Nd

private

number of up electrons

Definition at line 126 of file helpers.h.

int MomBasis::Nu

private

number of up electrons

Definition at line 124 of file helpers.h.

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

• helpers.h
• helpers.cpp