#include <TensorQ.h>

Inheritance diagram for CheMPS2::TensorQ:

Collaboration diagram for CheMPS2::TensorQ:

Public Member Functions
	TensorQ (const int boundary_index, const int Idiff, const bool moving_right, const SyBookkeeper denBK, const Problem Prob, const int site)
	Constructor. More...

virtual	~TensorQ ()
	Destructor.

void	AddTermSimple (TensorT *denT)
	Add terms after update/clear without previous tensors. More...

void	AddTermsL (TensorL *Ltensors, TensorT denT, double workmem, double workmem2)
	Add terms after update/clear with previous TensorL's. More...

void	AddTermsAB (TensorOperator denA, TensorOperator denB, TensorT denT, double workmem, double *workmem2)
	Add terms after update/clear with previous A-tensors and B-tensors. More...

void	AddTermsCD (TensorOperator denC, TensorOperator denD, TensorT denT, double workmem, double *workmem2)
	Add terms after update/clear with previous C-tensors and D-tensors. More...

Public Member Functions inherited from CheMPS2::TensorOperator
	TensorOperator (const int boundary_index, const int two_j, const int n_elec, const int n_irrep, const bool moving_right, const bool prime_last, const bool jw_phase, const SyBookkeeper bk_up, const SyBookkeeper bk_down)
	Constructor. More...

virtual	~TensorOperator ()
	Destructor.

int	gNKappa () const
	Get the number of symmetry blocks. More...

double *	gStorage ()
	Get the pointer to the storage. More...

int	gKappa (const int N1, const int TwoS1, const int I1, const int N2, const int TwoS2, const int I2) const
	Get the index corresponding to a certain tensor block. More...

int	gKappa2index (const int kappa) const
	Get the storage jump corresponding to a certain tensor block. More...

double *	gStorage (const int N1, const int TwoS1, const int I1, const int N2, const int TwoS2, const int I2)
	Get the pointer to the storage of a certain tensor block. More...

int	gIndex () const
	Get the boundary index. More...

int	get_2j () const
	Get twice the spin of the tensor operator. More...

int	get_nelec () const
	Get how many electrons there are more in the symmetry sector of the lower leg compared to the upper leg. More...

int	get_irrep () const
	Get the (real-valued abelian) point group irrep difference between the symmetry sectors of the lower and upper legs (see Irreps.h) More...

void	update (TensorOperator previous, TensorT mps_tensor_up, TensorT mps_tensor_down, double workmem)
	Clear and update. More...

void	daxpy (double alpha, TensorOperator *to_add)
	daxpy for TensorOperator More...

void	daxpy_transpose_tensorCD (const double alpha, TensorOperator *to_add)
	daxpy_transpose for C- and D-tensors (with special spin-dependent factors) More...

void	clear ()
	Set all storage variables to 0.0.

double	inproduct (TensorOperator *buddy, const char trans) const
	Make the in-product of two TensorOperator. More...

Additional Inherited Members
Protected Member Functions inherited from CheMPS2::TensorOperator
void	update_moving_right (const int ikappa, TensorOperator previous, TensorT mps_tensor_up, TensorT mps_tensor_down, double workmem)
	Update moving right. More...

void	update_moving_left (const int ikappa, TensorOperator previous, TensorT mps_tensor_up, TensorT mps_tensor_down, double workmem)
	Update moving left. More...

Protected Attributes inherited from CheMPS2::TensorOperator
const SyBookkeeper *	bk_up
	The bookkeeper of the upper MPS.

const SyBookkeeper *	bk_down
	The bookkeeper of the lower MPS.

int	two_j
	Twice the spin of the tensor operator.

int	n_elec
	How many electrons there are more in the symmetry sector of the lower leg compared to the upper leg.

int	n_irrep
	The (real-valued abelian) point group irrep difference between the symmetry sectors of the lower and upper legs (see Irreps.h)

bool	moving_right
	Whether or not moving right.

int *	sector_nelec_up
	The up particle number sector.

int *	sector_irrep_up
	The up spin symmetry sector.

int *	sector_spin_up
	The up spin symmetry sector.

int *	sector_spin_down
	The down spin symmetry sector (pointer points to sectorTwoS1 if two_j == 0)

bool	prime_last
	Convention in which the tensor operator is stored (see class information)

bool	jw_phase
	Whether or not to include a Jordan-Wigner phase due to the fermion anti-commutation relations.

Protected Attributes inherited from CheMPS2::Tensor
int	index
	Index of the Tensor object. For TensorT: a site index; for other tensors: a boundary index.

double *	storage
	The actual variables. Tensor block kappa begins at storage+kappa2index[kappa] and ends at storage+kappa2index[kappa+1].

int	nKappa
	Number of Tensor blocks.

int *	kappa2index
	kappa2index[kappa] indicates the start of tensor block kappa in storage. kappa2index[nKappa] gives the size of storage.

Detailed Description

TensorQ class.

Author: Sebastian Wouters sebas.nosp@m.tian.nosp@m.woute.nosp@m.rs@g.nosp@m.mail..nosp@m.com

Date: March 5, 2013

The TensorQ class is a storage and manipulation class for the complementary operator of three contracted creators/annihilitors.

Definition at line 37 of file TensorQ.h.

Constructor & Destructor Documentation

CheMPS2::TensorQ::TensorQ	(	const int	boundary_index,
		const int	Idiff,
		const bool	moving_right,
		const SyBookkeeper *	denBK,
		const Problem *	Prob,
		const int	site
	)

Constructor.

Parameters

boundary_index	The boundary index
Idiff	The irrep of the one creator ( sandwiched if TensorL ; to sandwich if TensorQ )
moving_right	If true: sweep from left to right. If false: sweep from right to left
denBK	Symmetry bookkeeper of the problem at hand
Prob	Problem containing the matrix elements
site	The site on which the last crea/annih should work

Definition at line 27 of file TensorQ.cpp.

Member Function Documentation

void CheMPS2::TensorQ::AddTermsAB	(	TensorOperator *	denA,
		TensorOperator *	denB,
		TensorT *	denT,
		double *	workmem,
		double *	workmem2
	)

Add terms after update/clear with previous A-tensors and B-tensors.

Parameters

denA	The A-tensor to construct the Q-term
denB	The B-tensor to construct the Q-term
denT	TensorT to construct the Q-term with previous TensorL's
workmem	Work memory
workmem2	Work memory

Definition at line 386 of file TensorQ.cpp.

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void CheMPS2::TensorQ::AddTermsCD	(	TensorOperator *	denC,
		TensorOperator *	denD,
		TensorT *	denT,
		double *	workmem,
		double *	workmem2
	)

Add terms after update/clear with previous C-tensors and D-tensors.

Parameters

denC	The C-tensor to construct the Q-term
denD	The D-tensor to construct the Q-term
denT	TensorT to construct the Q-term with previous TensorL's
workmem	Work memory
workmem2	Work memory

Definition at line 601 of file TensorQ.cpp.

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void CheMPS2::TensorQ::AddTermSimple ( TensorT * denT )

Add terms after update/clear without previous tensors.

Parameters

denT	TensorT to construct the Q-term without previous tensors

Definition at line 45 of file TensorQ.cpp.

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void CheMPS2::TensorQ::AddTermsL	(	TensorL **	Ltensors,
		TensorT *	denT,
		double *	workmem,
		double *	workmem2
	)

Add terms after update/clear with previous TensorL's.

Parameters

Ltensors	The TensorL's to construct the Q-term
denT	TensorT to construct the Q-term with previous TensorL's
workmem	Work memory
workmem2	Work memory

Definition at line 106 of file TensorQ.cpp.

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation