state.h File Reference

A T3N State. More...

#include "tree.h"
#include "inc/util/history.h"
#include "inc/util/pair.h"
#include "inc/util/vectors.h"
#include "operator.h"
#include "t3n-tensor.h"

Include dependency graph for state.h:

This graph shows which files directly or indirectly include this file:

Classes
class	syten::T3N::State

Namespaces
namespace	syten
	Syten namespace.
namespace	syten::T3N
	Namespace for T3N.

Functions
void	syten::T3N::addScaled (State &a, State const &b, SDef const s)
	Adds a T3NS b, scaled by the scalar prefactor s to a T3NS a. More...
SRDef	syten::T3N::apply_op_itrunc (State &a, Operator const &op, Truncation const &trunc)
	Applied the T3NO op to the T3NS a and immediately truncates during application. More...
SRDef	syten::T3N::apply_op_itrunc_rec (State &state, State::Ptrc a, Operator::cPtrc op, Truncation const &t)
	Recursive helper function. More...
template<typename Iterator = int>
std::tuple< State, SRDef >	syten::T3N::apply_op_orthogonalise_fit (State const &, Operator const &, Truncation const &, SRDef, Index=12, Index=2, State=State(), Iterator=0, Iterator=0)
	Dummy implementation for certain Krylov modes. More...
SRDef	syten::T3N::apply_operator_itrunc (State::Ptrc a, Operator::cPtrc o, Truncation t)
	Applies operator to state and truncates. More...
std::vector< SRDef >	syten::T3N::block_entropies (State &state, bool const, SRDef const alpha=1.)
	SMPS overload, which gives back vector. More...
std::map< std::vector< Index >, SRDef >	syten::T3N::block_entropies (State &state, SRDef const alpha=1.)
	Calculates all block entropies and returns them. More...
void	syten::T3N::block_entropies_rec (std::map< std::vector< Index >, SRDef > &entropies, Vec< Index > &pos, State::Ptrc p, SRDef const &alpha)
	Recursive helper. More...
SDef	syten::T3N::expectation (State const &a, Operator const &op)
	Returns the expectation value of an operator wrt a state. More...
SDef	syten::T3N::expectation (State const &a, Operator const &op, State const &b)
	Returns the expectation value of an operator between two states as \( \langle b | \left( \hat O | a \rangle \right) \). More...
STensor	syten::T3N::expectation_rec (State::cPtrc const aptr, Operator::cPtrc const optr, State::cPtrc const bptr)
	Returns the partial contraction of tensors below (and including) the supplied pointers. More...
SRDef	syten::T3N::norm (State const &a)
	Returns the norm \( \sqrt{\langle a | a \rangle}\) of a state. More...
SRDef	syten::T3N::normSqd (State const &a)
	Returns the squared norm \( \langle a | a \rangle\) of a state. More...
State	syten::T3N::operator* (SDef const c, State const &s)
	Multiplies const and state. More...
State	syten::T3N::operator* (State const &s, SDef const c)
	Multiplies state and const. More...
State	syten::T3N::operator* (State const &state, Operator const &op)
	Acts w/ op on state. More...
State &	syten::T3N::operator*= (State &s, SDef const c)
	Multiplies s by the scalar c More...
State	syten::T3N::operator+ (State const &a, State const &b)
	Sum of two T3NS, \( |r\rangle = |b\rangle + |a\rangle \) More...
State	syten::T3N::operator- (State const &a, State const &b)
	Negates state. More...
State	syten::T3N::operator/ (State const &s, SDef const c)
	Divides by const. More...
State &	syten::T3N::operator/= (State &s, SDef const c)
	Divides by const. More...
std::ostream &	syten::T3N::operator<< (std::ostream &out, T3N::State const &state)
	Output a T3NS. More...
template<typename It >
SRDef	syten::T3N::orthogonalise_variational (State &, It, It)
	Dummy implementation for certain Krylov modes. More...
template<typename It >
SRDef	syten::T3N::orthogonalise_variational_two_site (State &, It, It, Truncation const &)
	Dummy implementation for certain Krylov modes. More...
SDef	syten::T3N::overlap (State const &b, State const &a)
	Returns the overlap \( \langle a | b \rangle \) between two states. More...
STensor	syten::T3N::overlap_rec (State::cPtrc a, State::cPtrc b, bool const cache)
	Recursively returns the partial contraction of tensors below (and including) pointers a and b. More...
SDef	syten::T3N::variance (T3N::State const &a, T3N::Operator const &op, bool const truncateIntermediate=true, Truncation const trunc=Truncation())
	Calculates the variance. More...

Detailed Description

A T3N State.