mpqc::PrimitiveOperator< Nc, Na, Index1 > Class Template Reference

Documentation

template<size_t Nc, size_t Na, typename Index1>
class mpqc::PrimitiveOperator< Nc, Na, Index1 >

basic non-conserving operator in sp representation

Template Parameters

Nc	number of created particles
Na	number of annihilated particles

Public Types
using	state_index_type = Index1

Public Member Functions
	PrimitiveOperator ()=default
template<typename Int = state_index_type>
	PrimitiveOperator (const std::array< Int, Nc > &t, const std::array< Int, Na > &f)
const std::array< state_index_type, Nc > &	cre () const
const std::array< state_index_type, Na > &	ann () const
PrimitiveOperator< Na, Nc >	adjoint () const
template<typename String >
void	apply_to (String &os) const
template<typename String >
void	apply_to_unsafe (String &os) const
template<typename String >
std::decay_t< String >	apply (String &&os) const
template<typename String >
std::decay_t< String >	apply_unsafe (String &&os) const
template<typename FString >
bool	sign (const FString &s) const
template<typename FString >
bool	sign_apply_to (FString &os) const
template<typename FString >
std::pair< bool, std::decay_t< FString > >	operator() (FString &&os) const

Member Typedef Documentation

state_index_type

template<size_t Nc, size_t Na, typename Index1 >

using mpqc::PrimitiveOperator< Nc, Na, Index1 >::state_index_type = Index1

Constructor & Destructor Documentation

PrimitiveOperator() [1/2]

template<size_t Nc, size_t Na, typename Index1 >

mpqc::PrimitiveOperator< Nc, Na, Index1 >::PrimitiveOperator ( )

default

PrimitiveOperator() [2/2]

template<size_t Nc, size_t Na, typename Index1 >

template<typename Int = state_index_type>

mpqc::PrimitiveOperator< Nc, Na, Index1 >::PrimitiveOperator ( const std::array< Int, Nc > &  t, const std::array< Int, Na > &  f  )

inline

Member Function Documentation

adjoint()

template<size_t Nc, size_t Na, typename Index1 >

PrimitiveOperator<Na, Nc> mpqc::PrimitiveOperator< Nc, Na, Index1 >::adjoint ( ) const

inline

Returns

the adjoint of this operator

ann()

template<size_t Nc, size_t Na, typename Index1 >

const std::array<state_index_type, Na>& mpqc::PrimitiveOperator< Nc, Na, Index1 >::ann ( ) const

inline

reports the states in which particles are annihilated

Returns

the states in which particles are annihilated

apply()

template<size_t Nc, size_t Na, typename Index1 >

template<typename String >

std::decay_t<String> mpqc::PrimitiveOperator< Nc, Na, Index1 >::apply ( String &&  os ) const

inline

applies this operator to string os and returns the result. Unsafe, but fast.

Parameters

[in,out]

os

the String object

Returns

string obtained by removing a particle from_ from_ and adding a particle to to_.

apply_to()

template<size_t Nc, size_t Na, typename Index1 >

template<typename String >

void mpqc::PrimitiveOperator< Nc, Na, Index1 >::apply_to ( String &  os ) const

inline

applies this operator to string os in-place.

Parameters

[in,out]

os

the String object

apply_to_unsafe()

template<size_t Nc, size_t Na, typename Index1 >

template<typename String >

void mpqc::PrimitiveOperator< Nc, Na, Index1 >::apply_to_unsafe ( String &  os ) const

inline

applies this operator to string os in-place.

Parameters

[in,out]

os

the String object

Warning

unsafe, fast

apply_unsafe()

template<size_t Nc, size_t Na, typename Index1 >

template<typename String >

std::decay_t<String> mpqc::PrimitiveOperator< Nc, Na, Index1 >::apply_unsafe ( String &&  os ) const

inline

applies this operator to string os and returns the result. Unsafe, but fast.

Parameters

[in,out]

os

the String object

Returns

string obtained by removing a particle from_ from_ and adding a particle to to_.

cre()

template<size_t Nc, size_t Na, typename Index1 >

const std::array<state_index_type, Nc>& mpqc::PrimitiveOperator< Nc, Na, Index1 >::cre ( ) const

inline

reports the states in which particles are created

Returns

the states in which particles are created

operator()()

template<size_t Nc, size_t Na, typename Index1 >

template<typename FString >

std::pair<bool, std::decay_t<FString> > mpqc::PrimitiveOperator< Nc, Na, Index1 >::operator() ( FString &&  os ) const

inline

similar to sign_apply_to(), but nonmutating

Parameters

[in]

os

the input FString object

Returns

new pair[sign_change,FString]

sign()

template<size_t Nc, size_t Na, typename Index1 >

template<typename FString >

bool mpqc::PrimitiveOperator< Nc, Na, Index1 >::sign ( const FString &  s ) const

inline

reports whether application of this operator to fermionic string str changes the sign

Note

the sign changes if the number of occupied states "crossed" by the operator is odd

Parameters

[in]

s

the FString object

Returns

true is the sign of the state changes

sign_apply_to()

template<size_t Nc, size_t Na, typename Index1 >

template<typename FString >

bool mpqc::PrimitiveOperator< Nc, Na, Index1 >::sign_apply_to ( FString &  os ) const

inline

same as apply_to(), but returns whether application operator changes the sign of the state for a fermionic string; the sign changes if the number of occupied states "crossed" by the operator is odd

Parameters

[in,out]

os

the FString object

Returns

true is the sign of the state changes

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

• mpqc/math/fock/fwd.h
• mpqc/math/fock/string.h