iPEPSv2 corner transfer matrix representation. More...

#include <ctm.h>

Collaboration diagram for syten::IPEPSv2::CornerTransferMatrix:

Classes
struct	GrowthResult
	Helper struct representing the result of a growth step. More...

Public Types
enum class	GrowthMode { SVDOnly , WithQR , SVDLiao }
	Selects the CTM growth mode, using either a simple SVD of the projector or a more involved QR decomposition. More...

Public Member Functions
	CornerTransferMatrix (CornerTransferMatrix &&other)=default
	Move ctor. More...

	CornerTransferMatrix (CornerTransferMatrix const &other)=default
	Copy ctor. More...

	CornerTransferMatrix (State const &psi, GrowthMode m=GrowthMode::WithQR)
	Standard ctor. More...

void	disable_autodiff ()
	Disables autodifferentiation for all tensors in this CTM. More...

GrowthResult	grow (State const &psi, Truncation const &trunc)
	Grows the CTM once from each direction. More...

GrowthResult	grow_b (State const &psi, Truncation const &trunc)
	Grows the CTM from the bottom along an entire unit cell. More...

GrowthResult	grow_b_once (int d, State const &psi, Truncation const &trunc)
	Grows the CTM from the bottom on the specified rung. More...

GrowthResult	grow_l (State const &psi, Truncation const &trunc)
	Grows the CTM from the left along an entire unit cell. More...

GrowthResult	grow_l_once (int w, State const &psi, Truncation const &trunc)
	Grows the CTM from the left on the specified rung. More...

GrowthResult	grow_r (State const &psi, Truncation const &trunc)
	Grows the CTM from the right along an entire unit cell. More...

GrowthResult	grow_r_once (int w, State const &psi, Truncation const &trunc)
	Grows the CTM from the right on the specified rung. More...

GrowthResult	grow_t (State const &psi, Truncation const &trunc)
	Grows the CTM from the top along an entire unit cell. More...

GrowthResult	grow_t_once (int d, State const &psi, Truncation const &trunc)
	Grows the CTM from the top on the specified rung. More...

Index	max_blocksize () const
	Returns the maximal blocksize of all CTM auxiliary bases. More...

Index	max_reduced_states () const
	Returns the maximal reduced size among the CTM auxiliary bases. More...

Index	max_total_states () const
	Returns the maximal total size among the CTM auxiliary bases. More...

std::tuple< bool, SRDef, Index >	multi_grow (State const &psi, Truncation const &trunc, Index const max_steps, SRDef const sv1_conv)
	Grows the CTM at most `max_steps` times or until the first singular values changed by less than `sv1_conv`. More...

CornerTransferMatrix &	operator= (CornerTransferMatrix &&other)=default
	Move assignment operator. More...

CornerTransferMatrix &	operator= (CornerTransferMatrix const &other)=default
	Copy assignment operator. More...

Static Public Member Functions
template<typename MapperA , typename MapperB , typename MapperC , typename MapperD , typename MapperE , typename MapperF >
static GrowthResult	grow_helper (State const &psi, Truncation trunc, Grid< STensor > &cA, Grid< STensor > &cB, Grid< STensor > &tA, Grid< STensor > &tB, Grid< STensor > &rung, int max_counter, MapperA this_on_rung, MapperB next_on_rung, MapperC prev_on_rung, MapperD this_on_next, MapperE next_on_next, MapperF prev_on_next, BondGrid< SBasisId > &m, BondGrid< SRDef > &sv1, CornerTransferMatrix::GrowthMode mode)
	Growth helper, unifies all growth directions. More...

Public Attributes
Grid< STensor >	blc
	bottom-left corner CTM tensors on each site. More...

Grid< STensor >	br
	bottom rung CTM tensors on each site. More...

Grid< STensor >	brc
	bottom-right corner CTM tensors on each site. More...

int	depth
	depth of the unit cell More...

Grid< STensor >	lr
	left rung CTM tensors on each site. More...

BondGrid< SBasisId >	mlt
	CTM basis of the top and left rungs between each site. More...

GrowthMode	mode = GrowthMode::WithQR
	currently selected growth mode More...

BondGrid< SBasisId >	mrb
	CTM basis of the bottom and right rungs between each site. More...

Grid< STensor >	rr
	right rung CTM tensors on each site. More...

BondGrid< SRDef >	sv1_lt
	first singular values of the top and left rung during the last growth step More...

BondGrid< SRDef >	sv1_rb
	first singular values of the bottom and right rung during the last growth step More...

Grid< STensor >	tlc
	top-left corner CTM tensors on each site. More...

Grid< STensor >	tr
	top rung CTM tensors on each site. More...

Grid< STensor >	trc
	top-right corner CTM tensors on each site. More...

int	width
	width of the unit cell More...

Detailed Description

iPEPSv2 corner transfer matrix representation.

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

inc/ipeps2/ctm.h
inc/ipeps2/ctm.cpp

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description