A horizontal two-site environment consisting of six tensors surrounding those on two neighbouring sites. More...

#include <environment.h>

Collaboration diagram for syten::IPEPS::Horz2CTM:

Public Member Functions
SDef	expectation_value (State const &psi, ATwoOp const &op, bool assume_norm_one=false) const
	Calculates the expectation value \( \langle \psi \| \hat o \| \psi \rangle / \langle \psi \| \psi \rangle \) requiring that `op` acts on the two focus sites of `this`. More...

	Horz2CTM ()=default
	Default ctor, does nothing. More...

	Horz2CTM (FullCTM const &ctm, State const &psi, Coord const left, Coord const right, Truncation const &trunc)
	Constructs the environment from the supplied full CTM `ctm` and the state `psi` on sites `left` and `right`. More...

	Horz2CTM (Vec< Cached< Tensor< 3 > > > const &top_rung, Vec< Basis > const &top_rung_bases, Vec< Cached< Tensor< 3 > > > const &bot_rung, Vec< Basis > const &bot_rung_bases, Tensor< 2 > const &tlc, Tensor< 2 > const &trc, Tensor< 2 > const &blc, Tensor< 2 > const &brc, Tensor< 3 > const &left_boundary, Basis const &left_boundary_basis, Tensor< 3 > const &right_boundary, Basis const &right_boundary_basis, State const &psi, Coord const left, Coord const right)
	Constructs the horizontal 2-site environment from a pre-supplied top and bottom rung corresponding directly to those rungs neighbouring the environment rung as well as the corresponding bases, CTM corners, state and coordinates. More...

SRDef	norm (State const &psi) const
	Calculates the norm of the state with respect to the current two focus sites, i.e. completes the double layer and returns the square root of the result. More...

SRDef	normSqd (State const &psi) const
	Calculates the squared norm of the state with respect to the current two focus sites, i.e. completes the double layer. More...

template<typename Archive >
void	serialize (Archive &ar, const unsigned int in_version)
	Boost archiving. More...

Public Attributes
Cached< Tensor< 3 > >	bl
	left bottom/forward tensor More...

Basis	blb
	bottom left single-layer basis More...

Cached< Tensor< 3 > >	br
	right bottom/forward tensor More...

Basis	brb
	bottom right single-layer basis More...

Cached< Tensor< 3 > >	cl
	left corner More...

Basis	clb
	left corner single-layer basis More...

Cached< Tensor< 3 > >	cr
	right corner More...

Basis	crb
	right corner single-layer basis More...

Coord	lsite {0,0}
	left focus site More...

Coord	rsite {0,0}
	right focus site More...

Cached< Tensor< 3 > >	tl
	left top/backward tensor More...

Basis	tlb
	top left single-layer basis More...

Cached< Tensor< 3 > >	tr
	right top/backward tensor More...

Basis	trb
	top right single-layer basis More...

Static Public Attributes
static constexpr unsigned int	version = 1
	current version, bump if you change one of the data structures here More...

Private Member Functions
void	setup (Vec< Cached< Tensor< 3 > > > const &top_rung, Vec< Basis > const &top_rung_bases, Vec< Cached< Tensor< 3 > > > const &bot_rung, Vec< Basis > const &bot_rung_bases, Tensor< 2 > const &tlc, Tensor< 2 > const &trc, Tensor< 2 > const &blc, Tensor< 2 > const &brc, Tensor< 3 > const &left_boundary, Basis const &left_boundary_basis, Tensor< 3 > const &right_boundary, Basis const &right_boundary_basis, State const &psi, Coord const left, Coord const right)
	Helper function to do the actual setup. More...

Detailed Description

A horizontal two-site environment consisting of six tensors surrounding those on two neighbouring sites.

The remover tensor is contained in the backwards environment tensors if necessary, but must still be inserted if either of the two focus sites is the [0,0] site.

Tensors are arranged as:

   -tl- -tr-
 /  |     |  \
cl-        -cr
 \  |     |  /
   -bl- -br-

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

inc/ipeps/environment.h
inc/ipeps/environment.cpp

Public Member Functions

Public Attributes

Static Public Attributes

Private Member Functions

Detailed Description