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MpsCompressor< Symmetry, Scalar, MpoScalar > Class Template Reference

Detailed Description

template<typename Symmetry, typename Scalar, typename MpoScalar = double>
class MpsCompressor< Symmetry, Scalar, MpoScalar >

Compressor for MPS. Needed to obtain various operations containing MPSs and MPOs with a variational approach.

Template Parameters
Symmetry: A class providing all relevant functions and infos that are determined by the Symmetry. Click here for more information.
Scalar: double or complex<double>
MpoScalar: double or complex<double>

Definition at line 37 of file MpsCompressor.h.

#include <MpsCompressor.h>

Public Member Functions

 MpsCompressor (DMRG::VERBOSITY::OPTION VERBOSITY=DMRG::VERBOSITY::SILENT)
 
void lincomboCompress (const vector< Mps< Symmetry, Scalar > > &Vin, const vector< Scalar > &factors, Mps< Symmetry, Scalar > &Vout, const Mps< Symmetry, Scalar > &Vguess, size_t Minit, size_t Mincr=100, size_t Mlimit=10000, double tol=1e-4, size_t max_halfsweeps=40, size_t min_halfsweeps=1)
 
string info () const
 
string t_info () const
 
double memory (MEMUNIT memunit=GB) const
 
void stateCompress (const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout, size_t Minit, size_t Mincr=100, size_t Mlimit=10000, double tol=1e-4, size_t max_halfsweeps=40, size_t min_halfsweeps=1)
 
template<typename MpOperator >
void prodCompress (const MpOperator &H, const MpOperator &Hdag, const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout, qarray< Symmetry::Nq > Qtot_input, size_t Minit, size_t Mincr=100, size_t Mlimit=10000, double tol=1e-4, size_t max_halfsweeps=100, size_t min_halfsweeps=1, std::size_t savePeriod=0, std::string saveName="backup", bool MEASURE_DISTANCE=true, const MpOperator *HdagH=NULL)
 
template<typename MpOperator >
void polyCompress (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin1, double polyB, const Mps< Symmetry, Scalar > &Vin2, Mps< Symmetry, Scalar > &Vout, size_t Minit, size_t Mincr=100, size_t Mlimit=10000, double tol=DMRG_POLYCOMPRESS_TOL, size_t max_halfsweeps=DMRG_POLYCOMPRESS_MAX, size_t min_halfsweeps=DMRG_POLYCOMPRESS_MIN)
 

Private Types

typedef Matrix< Scalar, Dynamic, Dynamic > MatrixType
 

Private Member Functions

string print_dist () const
 
void prepSweep (const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout)
 
void stateOptimize1 (const Mps< Symmetry, Scalar > &Vin, const Mps< Symmetry, Scalar > &Vout, PivotVector< Symmetry, Scalar > &Aout)
 
void stateOptimize1 (const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout)
 
void stateOptimize2 (const Mps< Symmetry, Scalar > &Vin, const Mps< Symmetry, Scalar > &Vout, PivotVector< Symmetry, Scalar > &ApairOut)
 
void stateOptimize2 (const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout)
 
void build_L (size_t loc, const Mps< Symmetry, Scalar > &Vbra, const Mps< Symmetry, Scalar > &Vket, bool RANDOMIZE=false)
 
void build_R (size_t loc, const Mps< Symmetry, Scalar > &Vbra, const Mps< Symmetry, Scalar > &Vket, bool RANDOMIZE=false)
 
template<typename MpOperator >
void prepSweep (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout, bool RANDOMIZE=false)
 
template<typename MpOperator >
void prodOptimize1 (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin, const Mps< Symmetry, Scalar > &Vout, PivotVector< Symmetry, Scalar > &Aout)
 
template<typename MpOperator >
void prodOptimize1 (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout)
 
template<typename MpOperator >
void prodOptimize2 (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout)
 
template<typename MpOperator >
void prodOptimize2 (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin, const Mps< Symmetry, Scalar > &Vout, PivotVector< Symmetry, Scalar > &ApairOut)
 
template<typename MpOperator >
void build_LW (size_t loc, const Mps< Symmetry, Scalar > &Vbra, const MpOperator &H, const Mps< Symmetry, Scalar > &Vket, bool RANDOMIZE=false)
 
template<typename MpOperator >
void build_RW (size_t loc, const Mps< Symmetry, Scalar > &Vbra, const MpOperator &H, const Mps< Symmetry, Scalar > &Vket, bool RANDOMIZE=false)
 
template<typename MpOperator >
void prepSweep (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin1, const Mps< Symmetry, Scalar > &Vin2, Mps< Symmetry, Scalar > &Vout, bool RANDOMIZE=false)
 
template<typename MpOperator >
void build_LRW (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin1, const Mps< Symmetry, Scalar > &Vin2, Mps< Symmetry, Scalar > &Vout)
 
void prepSweep (const vector< Mps< Symmetry, Scalar > > &Vin, Mps< Symmetry, Scalar > &Vout)
 
void stateOptimize1 (const vector< Mps< Symmetry, Scalar > > &Vin, const Mps< Symmetry, Scalar > &Vout, vector< PivotVector< Symmetry, Scalar > > &Aout)
 
void stateOptimize2 (const vector< Mps< Symmetry, Scalar > > &Vin, const Mps< Symmetry, Scalar > &Vout, vector< PivotVector< Symmetry, Scalar > > &ApairOut)
 
void build_L (size_t loc, const Mps< Symmetry, Scalar > &Vbra, const vector< Mps< Symmetry, Scalar > > &Vket, bool RANDOMIZE=false)
 
void build_R (size_t loc, const Mps< Symmetry, Scalar > &Vbra, const vector< Mps< Symmetry, Scalar > > &Vket, bool RANDOMIZE=false)
 
void build_LR (const vector< Mps< Symmetry, Scalar > > &Vin, Mps< Symmetry, Scalar > &Vout)
 
size_t loc1 () const
 
size_t loc2 () const
 
void sweep_to_edge (const Mps< Symmetry, Scalar > &Vin, Mps< Symmetry, Scalar > &Vout, bool BUILD_LR)
 
template<typename MpOperator >
void sweep_to_edge (const MpOperator &H, const Mps< Symmetry, Scalar > &Vin1, const Mps< Symmetry, Scalar > &Vin2, Mps< Symmetry, Scalar > &Vout, bool BUILD_LR, bool BUILD_LWRW)
 
void sweep_to_edge (const vector< Mps< Symmetry, Scalar > > &Vin, Mps< Symmetry, Scalar > &Vout, bool BUILD_LR)
 

Private Attributes

DMRG::VERBOSITY::OPTION CHOSEN_VERBOSITY
 
vector< PivotOverlap1< Symmetry, Scalar > > Env
 
vector< PivotMatrix1< Symmetry, Scalar, MpoScalar > > Heff
 
vector< vector< PivotOverlap1< Symmetry, Scalar > > > Envs
 
size_t N_sites
 
size_t N_sweepsteps
 
size_t N_halfsweeps
 
size_t Mcutoff
 
size_t Mcutoff_new
 
size_t Mmax
 
size_t Mmax_new
 
double sqdist
 
double tol
 
int pivot
 
DMRG::DIRECTION::OPTION CURRENT_DIRECTION
 
double t_opt = 0
 
double t_AA = 0
 
double t_sweep = 0
 
double t_LR = 0
 
double t_ohead = 0
 
double t_tot = 0
 

Member Typedef Documentation

◆ MatrixType

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
typedef Matrix<Scalar,Dynamic,Dynamic> MpsCompressor< Symmetry, Scalar, MpoScalar >::MatrixType
private

Definition at line 39 of file MpsCompressor.h.

Constructor & Destructor Documentation

◆ MpsCompressor()

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
MpsCompressor< Symmetry, Scalar, MpoScalar >::MpsCompressor ( DMRG::VERBOSITY::OPTION  VERBOSITY = DMRG::VERBOSITY::SILENT)
inline

Definition at line 43 of file MpsCompressor.h.

Member Function Documentation

◆ build_L() [1/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_L ( size_t  loc,
const Mps< Symmetry, Scalar > &  Vbra,
const Mps< Symmetry, Scalar > &  Vket,
bool  RANDOMIZE = false 
)
private

Definition at line 616 of file MpsCompressor.h.

◆ build_L() [2/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_L ( size_t  loc,
const Mps< Symmetry, Scalar > &  Vbra,
const vector< Mps< Symmetry, Scalar > > &  Vket,
bool  RANDOMIZE = false 
)
private

Definition at line 918 of file MpsCompressor.h.

◆ build_LR()

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_LR ( const vector< Mps< Symmetry, Scalar > > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 948 of file MpsCompressor.h.

◆ build_LRW()

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_LRW ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin1,
const Mps< Symmetry, Scalar > &  Vin2,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 1670 of file MpsCompressor.h.

◆ build_LW()

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_LW ( size_t  loc,
const Mps< Symmetry, Scalar > &  Vbra,
const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vket,
bool  RANDOMIZE = false 
)
private

Definition at line 1351 of file MpsCompressor.h.

◆ build_R() [1/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_R ( size_t  loc,
const Mps< Symmetry, Scalar > &  Vbra,
const Mps< Symmetry, Scalar > &  Vket,
bool  RANDOMIZE = false 
)
private

Definition at line 625 of file MpsCompressor.h.

◆ build_R() [2/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_R ( size_t  loc,
const Mps< Symmetry, Scalar > &  Vbra,
const vector< Mps< Symmetry, Scalar > > &  Vket,
bool  RANDOMIZE = false 
)
private

Definition at line 933 of file MpsCompressor.h.

◆ build_RW()

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::build_RW ( size_t  loc,
const Mps< Symmetry, Scalar > &  Vbra,
const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vket,
bool  RANDOMIZE = false 
)
private

Definition at line 1361 of file MpsCompressor.h.

◆ info()

template<typename Symmetry , typename Scalar , typename MpoScalar >
string MpsCompressor< Symmetry, Scalar, MpoScalar >::info

Prints some info about this class.

Definition at line 236 of file MpsCompressor.h.

◆ lincomboCompress()

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::lincomboCompress ( const vector< Mps< Symmetry, Scalar > > &  Vin,
const vector< Scalar > &  factors,
Mps< Symmetry, Scalar > &  Vout,
const Mps< Symmetry, Scalar > &  Vguess,
size_t  Minit,
size_t  Mincr = 100,
size_t  Mlimit = 10000,
double  tol = 1e-4,
size_t  max_halfsweeps = 40,
size_t  min_halfsweeps = 1 
)

Definition at line 638 of file MpsCompressor.h.

◆ loc1()

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::loc1 ( ) const
inlineprivate

Definition at line 207 of file MpsCompressor.h.

◆ loc2()

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::loc2 ( ) const
inlineprivate

Definition at line 208 of file MpsCompressor.h.

◆ memory()

template<typename Symmetry , typename Scalar , typename MpoScalar >
double MpsCompressor< Symmetry, Scalar, MpoScalar >::memory ( MEMUNIT  memunit = GB) const

Calculates the (theoretically) allocated memory (note: by default in GB).

Definition at line 290 of file MpsCompressor.h.

◆ polyCompress()

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::polyCompress ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin1,
double  polyB,
const Mps< Symmetry, Scalar > &  Vin2,
Mps< Symmetry, Scalar > &  Vout,
size_t  Minit,
size_t  Mincr = 100,
size_t  Mlimit = 10000,
double  tol = DMRG_POLYCOMPRESS_TOL,
size_t  max_halfsweeps = DMRG_POLYCOMPRESS_MAX,
size_t  min_halfsweeps = DMRG_POLYCOMPRESS_MIN 
)

Compresses an orthogonal iteration step $V_{out} \approx (C_n H - A_n) \cdot V_{in1} - B_n V_{in2}$. Needs to calculate $\left<V_{in1}\right|H^2\left|V_{in1}\right>$, $\left<V_{in2}\right|H\left|V_{in1}\right>$ and $\big<V_{in2}\big|V_{in2}\big>$. Works optimally with OpenMP and (at least) 3 threads, as the last overlap is cheap to do in the mixed-canonical representation. If convergence is not reached after 4 half-sweeps, the bond dimension of Vout is increased and it is set to random.

Warning
The Hamiltonian has to be rescaled by C_n and A_n already.
Parameters
[in]H: Hamiltonian (an Mps with Mpo::Qtarget() = Symmetry::qvacuum()) rescaled by 2
[in]Vin1: input state to be multiplied
[in]polyB: the coefficient before the subtracted vector
[in]Vin2: input state to be subtracted
[out]Vout: compressed output state
[in]Minit: initial matrix size cutoff per site for Vout
[in]Mincr: matrix size cutoff increment per site for Vout
[in]Mlimit: maximal allowable matrix size cutoff per site for Vout
[in]tol: tolerance for the square norm of the difference: $\left|V_{out} - 2H \cdot V_{in1} - V_{in2}\right|^2<tol$
Warning
Too small a value for tol will lead to bad convergence. Try something of the order of 1e-3 to 1e-4.
Parameters
[in]max_halfsweeps: maximal amount of half-sweeps
[in]min_halfsweeps: minimal amount of half-sweeps

Definition at line 1371 of file MpsCompressor.h.

◆ prepSweep() [1/4]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prepSweep ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout,
bool  RANDOMIZE = false 
)
private

Definition at line 1203 of file MpsCompressor.h.

◆ prepSweep() [2/4]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prepSweep ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin1,
const Mps< Symmetry, Scalar > &  Vin2,
Mps< Symmetry, Scalar > &  Vout,
bool  RANDOMIZE = false 
)
private

Definition at line 1609 of file MpsCompressor.h.

◆ prepSweep() [3/4]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prepSweep ( const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 508 of file MpsCompressor.h.

◆ prepSweep() [4/4]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prepSweep ( const vector< Mps< Symmetry, Scalar > > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 836 of file MpsCompressor.h.

◆ print_dist()

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
string MpsCompressor< Symmetry, Scalar, MpoScalar >::print_dist ( ) const
private

◆ prodCompress()

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prodCompress ( const MpOperator &  H,
const MpOperator &  Hdag,
const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout,
qarray< Symmetry::Nq >  Qtot_input,
size_t  Minit,
size_t  Mincr = 100,
size_t  Mlimit = 10000,
double  tol = 1e-4,
size_t  max_halfsweeps = 100,
size_t  min_halfsweeps = 1,
std::size_t  savePeriod = 0,
std::string  saveName = "backup",
bool  MEASURE_DISTANCE = true,
const MpOperator *  HdagH = NULL 
)

Compresses a matrix-vector product $\left|V_{out}\right> \approx H \left|V_{in}\right>$. Needs to calculate $\left<V_{in}\right|H^{\dagger}H\left|V_{in}\right>$. Works optimally with OpenMP and (at least) 2 threads. If convergence is not reached after 2 half-sweeps, the bond dimension of Vout is increased and it is set to random.

Parameters
[in]H: Operator
[in]Hdag: Adjoint operator
[in]Vin: input state
[out]Vout: compressed output state
[in]Qtot_input: Resulting quantum number for Vout
[in]Minit: matrix size cutoff per site for Vout, good guess: Vin.calc_Mmax()
[in]Mincr: matrix size cutoff increment per site for Vout
[in]Mlimit: maximal allowable matrix size cutoff per site for Vout
[in]tol: tolerance for the square norm of the difference: $\left|V_{out} - H \cdot V_{in}\right|^2<tol$
[in]max_halfsweeps: maximal amount of half-sweeps
[in]min_halfsweeps: minimal amount of half-sweeps
[in]HdagH: set this if Hdag*H is available as an MPO

Definition at line 960 of file MpsCompressor.h.

◆ prodOptimize1() [1/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prodOptimize1 ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin,
const Mps< Symmetry, Scalar > &  Vout,
PivotVector< Symmetry, Scalar > &  Aout 
)
private

Definition at line 1244 of file MpsCompressor.h.

◆ prodOptimize1() [2/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prodOptimize1 ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 1263 of file MpsCompressor.h.

◆ prodOptimize2() [1/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prodOptimize2 ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin,
const Mps< Symmetry, Scalar > &  Vout,
PivotVector< Symmetry, Scalar > &  ApairOut 
)
private

Definition at line 1293 of file MpsCompressor.h.

◆ prodOptimize2() [2/2]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::prodOptimize2 ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 1330 of file MpsCompressor.h.

◆ stateCompress()

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateCompress ( const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout,
size_t  Minit,
size_t  Mincr = 100,
size_t  Mlimit = 10000,
double  tol = 1e-4,
size_t  max_halfsweeps = 40,
size_t  min_halfsweeps = 1 
)

Compresses a given Mps $V_{out} \approx V_{in}$. If convergence is not reached after 2 half-sweeps, the bond dimension of Vout is increased and it is set to random.

Parameters
[in]Vin: input state to be compressed
[out]Vout: compressed output state
[in]Minit: initial matrix size cutoff per site for Vout
[in]Mincr: matrix size cutoff increment per site for Vout
[in]Mlimit: maximal allowable matrix size cutoff per site for Vout
[in]tol: tolerance for the square norm of the difference: $\left|V_{out}-V_{in}\right|^2<tol$
[in]max_halfsweeps: maximal amount of half-sweeps; break if exceeded
[in]min_halfsweeps: minimal amount of half-sweeps

Definition at line 399 of file MpsCompressor.h.

◆ stateOptimize1() [1/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateOptimize1 ( const Mps< Symmetry, Scalar > &  Vin,
const Mps< Symmetry, Scalar > &  Vout,
PivotVector< Symmetry, Scalar > &  Aout 
)
private

Definition at line 535 of file MpsCompressor.h.

◆ stateOptimize1() [2/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateOptimize1 ( const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 550 of file MpsCompressor.h.

◆ stateOptimize1() [3/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateOptimize1 ( const vector< Mps< Symmetry, Scalar > > &  Vin,
const Mps< Symmetry, Scalar > &  Vout,
vector< PivotVector< Symmetry, Scalar > > &  Aout 
)
private

Definition at line 865 of file MpsCompressor.h.

◆ stateOptimize2() [1/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateOptimize2 ( const Mps< Symmetry, Scalar > &  Vin,
const Mps< Symmetry, Scalar > &  Vout,
PivotVector< Symmetry, Scalar > &  ApairOut 
)
private

Definition at line 576 of file MpsCompressor.h.

◆ stateOptimize2() [2/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateOptimize2 ( const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout 
)
private

Definition at line 602 of file MpsCompressor.h.

◆ stateOptimize2() [3/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::stateOptimize2 ( const vector< Mps< Symmetry, Scalar > > &  Vin,
const Mps< Symmetry, Scalar > &  Vout,
vector< PivotVector< Symmetry, Scalar > > &  ApairOut 
)
private

Definition at line 886 of file MpsCompressor.h.

◆ sweep_to_edge() [1/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
template<typename MpOperator >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::sweep_to_edge ( const MpOperator &  H,
const Mps< Symmetry, Scalar > &  Vin1,
const Mps< Symmetry, Scalar > &  Vin2,
Mps< Symmetry, Scalar > &  Vout,
bool  BUILD_LR,
bool  BUILD_LWRW 
)
private

Definition at line 308 of file MpsCompressor.h.

◆ sweep_to_edge() [2/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::sweep_to_edge ( const Mps< Symmetry, Scalar > &  Vin,
Mps< Symmetry, Scalar > &  Vout,
bool  BUILD_LR 
)
private

Definition at line 343 of file MpsCompressor.h.

◆ sweep_to_edge() [3/3]

template<typename Symmetry , typename Scalar , typename MpoScalar >
void MpsCompressor< Symmetry, Scalar, MpoScalar >::sweep_to_edge ( const vector< Mps< Symmetry, Scalar > > &  Vin,
Mps< Symmetry, Scalar > &  Vout,
bool  BUILD_LR 
)
private

Definition at line 369 of file MpsCompressor.h.

◆ t_info()

template<typename Symmetry , typename Scalar , typename MpoScalar >
string MpsCompressor< Symmetry, Scalar, MpoScalar >::t_info

Prints some info about this class.

Definition at line 270 of file MpsCompressor.h.

Member Data Documentation

◆ CHOSEN_VERBOSITY

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
DMRG::VERBOSITY::OPTION MpsCompressor< Symmetry, Scalar, MpoScalar >::CHOSEN_VERBOSITY
private

Definition at line 130 of file MpsCompressor.h.

◆ CURRENT_DIRECTION

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
DMRG::DIRECTION::OPTION MpsCompressor< Symmetry, Scalar, MpoScalar >::CURRENT_DIRECTION
private

Definition at line 225 of file MpsCompressor.h.

◆ Env

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
vector<PivotOverlap1<Symmetry,Scalar> > MpsCompressor< Symmetry, Scalar, MpoScalar >::Env
private

Definition at line 135 of file MpsCompressor.h.

◆ Envs

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
vector<vector<PivotOverlap1<Symmetry,Scalar> > > MpsCompressor< Symmetry, Scalar, MpoScalar >::Envs
private

Definition at line 187 of file MpsCompressor.h.

◆ Heff

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
vector<PivotMatrix1<Symmetry,Scalar,MpoScalar> > MpsCompressor< Symmetry, Scalar, MpoScalar >::Heff
private

Definition at line 153 of file MpsCompressor.h.

◆ Mcutoff

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::Mcutoff
private

Definition at line 220 of file MpsCompressor.h.

◆ Mcutoff_new

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::Mcutoff_new
private

Definition at line 220 of file MpsCompressor.h.

◆ Mmax

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::Mmax
private

Definition at line 221 of file MpsCompressor.h.

◆ Mmax_new

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::Mmax_new
private

Definition at line 221 of file MpsCompressor.h.

◆ N_halfsweeps

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::N_halfsweeps
private

Definition at line 219 of file MpsCompressor.h.

◆ N_sites

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::N_sites
private

Definition at line 218 of file MpsCompressor.h.

◆ N_sweepsteps

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
size_t MpsCompressor< Symmetry, Scalar, MpoScalar >::N_sweepsteps
private

Definition at line 219 of file MpsCompressor.h.

◆ pivot

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
int MpsCompressor< Symmetry, Scalar, MpoScalar >::pivot
private

Definition at line 224 of file MpsCompressor.h.

◆ sqdist

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::sqdist
private

Definition at line 222 of file MpsCompressor.h.

◆ t_AA

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::t_AA = 0
private

Definition at line 228 of file MpsCompressor.h.

◆ t_LR

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::t_LR = 0
private

Definition at line 230 of file MpsCompressor.h.

◆ t_ohead

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::t_ohead = 0
private

Definition at line 231 of file MpsCompressor.h.

◆ t_opt

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::t_opt = 0
private

Definition at line 227 of file MpsCompressor.h.

◆ t_sweep

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::t_sweep = 0
private

Definition at line 229 of file MpsCompressor.h.

◆ t_tot

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::t_tot = 0
private

Definition at line 232 of file MpsCompressor.h.

◆ tol

template<typename Symmetry , typename Scalar , typename MpoScalar = double>
double MpsCompressor< Symmetry, Scalar, MpoScalar >::tol
private

Definition at line 222 of file MpsCompressor.h.

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