#include <MonomialOperator.hpp>

Inheritance diagram for Pomerol::QuarticOperator:

Collaboration diagram for Pomerol::QuarticOperator:

[legend]

Public Member Functions
template<typename... IndexTypes>
	QuarticOperator (IndexClassification< IndexTypes... > const &IndexInfo, HilbertSpace< IndexTypes... > const &HS, StatesClassification const &S, Hamiltonian const &H, ParticleIndex Index1, ParticleIndex Index2, ParticleIndex Index3, ParticleIndex Index4, std::tuple< bool, bool, bool, bool > const &Dagger=std::tuple< bool, bool, bool, bool >(true, true, false, false))

ParticleIndex	getIndex1 () const
	Return the single-particle index \(i\). More...

ParticleIndex	getIndex2 () const
	Return the single-particle index \(j\). More...

ParticleIndex	getIndex3 () const
	Return the single-particle index \(k\). More...

ParticleIndex	getIndex4 () const
	Return the single-particle index \(l\). More...

ParticleIndex	getCX1Index () const
	Return the single-particle index \(i\) under the assumption that O_i is a creation operator. More...

ParticleIndex	getCX2Index () const
	Return the single-particle index \(j\) under the assumption that O_j is a creation operator. More...

ParticleIndex	getC1Index () const
	Return the single-particle index \(k\) under the assumption that O_k is an annihilation operator. More...

ParticleIndex	getC2ndex () const
	Return the single-particle index \(l\) under the assumption that O_l is an annihilation operator. More...

std::tuple< bool, bool, bool, bool > const &	getDagger () const
	Return the creation/annihilation type of each of the four operators. More...

Public Member Functions inherited from Pomerol::MonomialOperator
template<typename ScalarType , typename... IndexTypes>
	MonomialOperator (libcommute::expression< ScalarType, IndexTypes... > const &MO, HilbertSpace< IndexTypes... > const &HS, StatesClassification const &S, Hamiltonian const &H)

bool	isComplex () const
	Is the monomial operator a complex-valued matrix? More...

MonomialOperatorPart &	getPartFromLeftIndex (BlockNumber LeftIndex)

MonomialOperatorPart const &	getPartFromLeftIndex (BlockNumber LeftIndex) const

MonomialOperatorPart &	getPartFromRightIndex (BlockNumber RightIndex)

MonomialOperatorPart const &	getPartFromRightIndex (BlockNumber RightIndex) const

BlockNumber	getLeftIndex (BlockNumber RightIndex) const

BlockNumber	getRightIndex (BlockNumber LeftIndex) const

BlocksBimap const &	getBlockMapping () const

template<typename... IndexTypes>
void	prepare (HilbertSpace< IndexTypes... > const &HS)

void	compute (RealType Tolerance=1e-8, MPI_Comm const &comm=MPI_COMM_WORLD)

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

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

void	setStatus (StatusEnum Status_in)

Additional Inherited Members
Public Types inherited from Pomerol::MonomialOperator
using	BlocksBimap = boost::bimaps::bimap< boost::bimaps::set_of< BlockNumber >, boost::bimaps::set_of< BlockNumber > >
	A bi-map container for connections between invariant subspaces established by a monomial operator. More...

using	BlockMapping = BlocksBimap::value_type
	A single subspace-to-subspace connection established by a monomial operator. More...

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

Protected Member Functions inherited from Pomerol::MonomialOperator
template<bool Complex>
LOperatorTypeRC< Complex > const &	getMOp () const

Protected Attributes inherited from Pomerol::MonomialOperator
bool	MOpComplex
	Whether the MOp object is complex-valued. More...

std::shared_ptr< void >	MOp
	A type-erased real/complex-valued `libcommute::loperator` object. More...

bool	Complex
	Whether the stored parts are complex-valued. More...

StatesClassification const &	S
	Information about invariant subspaces of the Hamiltonian. More...

Hamiltonian const &	H
	The Hamiltonian. More...

std::unordered_map< std::size_t, BlockNumber >	mapPartsFromRight
	A map between positions of parts in the parts list and the respective right subspace indices. More...

std::unordered_map< std::size_t, BlockNumber >	mapPartsFromLeft
	A map between positions of parts in the parts list and the respective left subspace indices. More...

BlocksBimap	LeftRightBlocks
	Left-to-right connections between invariant subspaces established by this monomial operator. More...

std::vector< MonomialOperatorPart >	parts
	List of parts (matrix blocks). More...

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

Detailed Description

A special case of a monomial operator: A product of four fermionic operators \(O_i O_j O_k O_l\). Each of \(O_i, O_j, O_k\) and \(O_l\) can be either a creation or annihilation operator.

Definition at line 332 of file MonomialOperator.hpp.

Constructor & Destructor Documentation

◆ QuarticOperator()

template<typename... IndexTypes>

Pomerol::QuarticOperator::QuarticOperator	(	IndexClassification< IndexTypes... > const &	IndexInfo,
		HilbertSpace< IndexTypes... > const &	HS,
		StatesClassification const &	S,
		Hamiltonian const &	H,
		ParticleIndex	Index1,
		ParticleIndex	Index2,
		ParticleIndex	Index3,
		ParticleIndex	Index4,
		std::tuple< bool, bool, bool, bool > const &	Dagger = `std::tuple<bool, bool, bool, bool>(true, true, false, false)`
	)

inline

Constructor.

Template Parameters

IndexTypes Types of indices carried by operators acting in the Hilbert space HS.

Parameters

[in]	IndexInfo	Map for fermionic operator index tuples.
[in]	HS	Hilbert space.
[in]	S	Information about invariant subspaces of the Hamiltonian.
[in]	H	The Hamiltonian.
[in]	Index1	The single-particle index \(i\) of the first operator.
[in]	Index2	The single-particle index \(j\) of the second operator.
[in]	Index3	The single-particle index \(k\) of the third operator.
[in]	Index4	The single-particle index \(l\) of the fourth operator.
[in]	Dagger	Indicates whether each of the four operators is a creator.

Definition at line 357 of file MonomialOperator.hpp.

Member Function Documentation

◆ getC1Index()

ParticleIndex Pomerol::QuarticOperator::getC1Index ( ) const

inline

Return the single-particle index \(k\) under the assumption that O_k is an annihilation operator.

Definition at line 409 of file MonomialOperator.hpp.

◆ getC2ndex()

ParticleIndex Pomerol::QuarticOperator::getC2ndex ( ) const

inline

Return the single-particle index \(l\) under the assumption that O_l is an annihilation operator.

Definition at line 414 of file MonomialOperator.hpp.

◆ getCX1Index()

ParticleIndex Pomerol::QuarticOperator::getCX1Index ( ) const

inline

Return the single-particle index \(i\) under the assumption that O_i is a creation operator.

Definition at line 399 of file MonomialOperator.hpp.

◆ getCX2Index()

ParticleIndex Pomerol::QuarticOperator::getCX2Index ( ) const

inline

Return the single-particle index \(j\) under the assumption that O_j is a creation operator.

Definition at line 404 of file MonomialOperator.hpp.

◆ getDagger()

std::tuple<bool, bool, bool, bool> const& Pomerol::QuarticOperator::getDagger ( ) const

inline

Return the creation/annihilation type of each of the four operators.

Definition at line 420 of file MonomialOperator.hpp.

◆ getIndex1()

ParticleIndex Pomerol::QuarticOperator::getIndex1 ( ) const

inline

Return the single-particle index \(i\).

Definition at line 390 of file MonomialOperator.hpp.

◆ getIndex2()

ParticleIndex Pomerol::QuarticOperator::getIndex2 ( ) const

inline

Return the single-particle index \(j\).

Definition at line 392 of file MonomialOperator.hpp.

◆ getIndex3()

ParticleIndex Pomerol::QuarticOperator::getIndex3 ( ) const

inline

Return the single-particle index \(k\).

Definition at line 394 of file MonomialOperator.hpp.

◆ getIndex4()

ParticleIndex Pomerol::QuarticOperator::getIndex4 ( ) const

inline

Return the single-particle index \(l\).

Definition at line 396 of file MonomialOperator.hpp.

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

pomerol/MonomialOperator.hpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QuarticOperator()

Member Function Documentation

◆ getC1Index()

◆ getC2ndex()

◆ getCX1Index()

◆ getCX2Index()

◆ getDagger()

◆ getIndex1()

◆ getIndex2()

◆ getIndex3()

◆ getIndex4()