Part of a monomial quantum operator. More...

#include <MonomialOperatorPart.hpp>

Inheritance diagram for Pomerol::MonomialOperatorPart:

Collaboration diagram for Pomerol::MonomialOperatorPart:

Public Member Functions
template<typename ScalarType >
	MonomialOperatorPart (LOperatorType< ScalarType > const &MOp, StatesClassification const &S, HamiltonianPart const &HFrom, HamiltonianPart const &HTo)

void	compute ()
	Compute and store all matrix elements of \(\hat M\) in the eigenbasis of the Hamiltonian. More...

void	setFromAdjoint (MonomialOperatorPart const &part)

bool	isComplex () const
	Is this object storing a complex-valued sparse matrices? More...

template<bool C>
RowMajorMatrixType< C > &	getRowMajorValue ()

template<bool C>
RowMajorMatrixType< C > const &	getRowMajorValue () const

template<bool C>
ColMajorMatrixType< C > &	getColMajorValue ()

template<bool C>
ColMajorMatrixType< C > const &	getColMajorValue () const

BlockNumber	getRightIndex () const
	Return the index of the right invariant subspace. More...

BlockNumber	getLeftIndex () const
	Return the index of the left invariant subspace. More...

Public Member Functions inherited from Pomerol::ComputableObject
	ComputableObject ()=default

StatusEnum	getStatus () const
	Return the current computation status. More...

void	setStatus (StatusEnum Status_in)

Protected Attributes
std::shared_ptr< void >	elementsRowMajor

std::shared_ptr< void >	elementsColMajor

const RealType	MatrixElementTolerance = 1e-8
	Matrix elements with the absolute value below this threshold are considered negligible. More...

Protected Attributes inherited from Pomerol::ComputableObject
StatusEnum	Status = Constructed
	Current computation status. More...

Friends
class	FieldOperatorContainer

std::ostream &	operator<< (std::ostream &os, MonomialOperatorPart const &part)

Additional Inherited Members
Public Types inherited from Pomerol::ComputableObject
enum	StatusEnum { Constructed, Prepared, Computed }
	Computation status of the object. More...

Detailed Description

Part of a monomial quantum operator.

This class stores a matrix block of an operator \(\hat M\), which is a monomial, i.e. a product of fermionic and/or bosonic creation/annihilation operators. The matrix is computed in the eigenbasis of the Hamiltonian \(\hat H\) and connects one of its invariant subspaces (right subspace) to another one (left subspace),

\[ \langle {\rm left}|\hat M|{\rm right}\rangle. \]

Definition at line 45 of file MonomialOperatorPart.hpp.

Constructor & Destructor Documentation

◆ MonomialOperatorPart()

template<typename ScalarType >

Pomerol::MonomialOperatorPart::MonomialOperatorPart	(	LOperatorType< ScalarType > const &	MOp,
		StatesClassification const &	S,
		HamiltonianPart const &	HFrom,
		HamiltonianPart const &	HTo
	)

inline

Constructor.

Template Parameters

ScalarType Scalar type (either double or std::complex<double>) of the linear operator MOp.

Parameters

[in]	MOp	The linear operator object corresponding to the monomial operator \(\hat M\).
[in]	S	Information about invariant subspaces of the Hamiltonian.
[in]	HFrom	Diagonal block of the Hamiltonian corresponding to the right invariant subspace.
[in]	HTo	Diagonal block of the Hamiltonian corresponding to the left invariant subspace.

Definition at line 82 of file MonomialOperatorPart.hpp.

Member Function Documentation

◆ compute()

void Pomerol::MonomialOperatorPart::compute ( )

Compute and store all matrix elements of \(\hat M\) in the eigenbasis of the Hamiltonian.

◆ getColMajorValue() [1/2]

template<bool C>

ColMajorMatrixType<C>& Pomerol::MonomialOperatorPart::getColMajorValue ( )

Return a reference to the stored column-major sparse matrix.

Template Parameters

C	Request a reference to the complex-valued matrix.

Precondition: The compile-time value of C must agree with the result of isComplex().

◆ getColMajorValue() [2/2]

template<bool C>

ColMajorMatrixType<C> const& Pomerol::MonomialOperatorPart::getColMajorValue ( ) const

Return a constant reference to the stored column-major sparse matrix.

Template Parameters

C	Request a reference to the complex-valued matrix.

Precondition: The compile-time value of C must agree with the result of isComplex().

◆ getLeftIndex()

BlockNumber Pomerol::MonomialOperatorPart::getLeftIndex ( ) const

inline

Return the index of the left invariant subspace.

Definition at line 124 of file MonomialOperatorPart.hpp.

◆ getRightIndex()

BlockNumber Pomerol::MonomialOperatorPart::getRightIndex ( ) const

inline

Return the index of the right invariant subspace.

Definition at line 122 of file MonomialOperatorPart.hpp.

◆ getRowMajorValue() [1/2]

template<bool C>

RowMajorMatrixType<C>& Pomerol::MonomialOperatorPart::getRowMajorValue ( )

Return a reference to the stored row-major sparse matrix.

Template Parameters

C	Request a reference to the complex-valued matrix.

Precondition: The compile-time value of C must agree with the result of isComplex().

◆ getRowMajorValue() [2/2]

template<bool C>

RowMajorMatrixType<C> const& Pomerol::MonomialOperatorPart::getRowMajorValue ( ) const

Return a constant reference to the stored row-major sparse matrix.

Template Parameters

C	Request a reference to the complex-valued matrix.

Precondition: The compile-time value of C must agree with the result of isComplex().

◆ isComplex()

bool Pomerol::MonomialOperatorPart::isComplex ( ) const

inline

Is this object storing a complex-valued sparse matrices?

Definition at line 102 of file MonomialOperatorPart.hpp.

◆ setFromAdjoint()

void Pomerol::MonomialOperatorPart::setFromAdjoint ( MonomialOperatorPart const & part )

Reset the stored sparse matrices to those obtained from \(\langle {\rm right}|\hat M^\dagger|{\rm left}\rangle\).

Parameters

[in] part Monomial operator part \(\langle {\rm right}|\hat M^\dagger|{\rm left}\rangle\).

Friends And Related Function Documentation

◆ FieldOperatorContainer

friend class FieldOperatorContainer

friend

Definition at line 46 of file MonomialOperatorPart.hpp.

◆ operator<<

std::ostream& operator<<	(	std::ostream &	os,
		MonomialOperatorPart const &	part
	)

friend

Output stream insertion operator.

Parameters

[out]	os	Output stream.
[in]	part	MonomialOperatorPart to be inserted.

Returns: Reference to the output stream.

Definition at line 130 of file MonomialOperatorPart.hpp.

Field Documentation

◆ elementsColMajor

std::shared_ptr<void> Pomerol::MonomialOperatorPart::elementsColMajor

protected

Type-erased real/complex sparse matrix \(\langle {\rm left}|\hat M|{\rm right}\rangle\) stored in the column-major order.

Definition at line 70 of file MonomialOperatorPart.hpp.

◆ elementsRowMajor

std::shared_ptr<void> Pomerol::MonomialOperatorPart::elementsRowMajor

protected

Type-erased real/complex sparse matrix \(\langle {\rm left}|\hat M|{\rm right}\rangle\) stored in the row-major order.

Definition at line 67 of file MonomialOperatorPart.hpp.

◆ MatrixElementTolerance

const RealType Pomerol::MonomialOperatorPart::MatrixElementTolerance = 1e-8

protected

Matrix elements with the absolute value below this threshold are considered negligible.

Definition at line 72 of file MonomialOperatorPart.hpp.

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

pomerol/MonomialOperatorPart.hpp

Public Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MonomialOperatorPart()

Member Function Documentation

◆ compute()

◆ getColMajorValue() [1/2]

◆ getColMajorValue() [2/2]

◆ getLeftIndex()

◆ getRightIndex()

◆ getRowMajorValue() [1/2]

◆ getRowMajorValue() [2/2]

◆ isComplex()

◆ setFromAdjoint()

Friends And Related Function Documentation

◆ FieldOperatorContainer

◆ operator<<

Field Documentation

◆ elementsColMajor

◆ elementsRowMajor

◆ MatrixElementTolerance