two_site_update_finite_vmps_impl.h File Reference

Implementation details for two-site finite variational MPS algorithm. More...

#include "gqmps2/algorithm/vmps/two_site_update_finite_vmps.h"
#include "gqmps2/one_dim_tn/mpo/mpo.h"
#include "gqmps2/one_dim_tn/mps/finite_mps/finite_mps.h"
#include "gqmps2/utilities.h"
#include "gqmps2/one_dim_tn/framework/ten_vec.h"
#include "gqmps2/consts.h"
#include "gqten/gqten.h"
#include "gqten/utility/timer.h"
#include <iostream>
#include <iomanip>
#include <vector>
#include <string>
#include <stdio.h>
#include <assert.h>

Go to the source code of this file.

Functions
template<typename DTenT >
double	gqmps2::MeasureEE (const DTenT &s, const size_t sdim)
std::string	gqmps2::GenEnvTenName (const std::string &dir, const long blk_len, const std::string temp_path)
void	gqmps2::RemoveFile (const std::string &file)
template<typename TenElemT , typename QNT >
GQTEN_Double	gqmps2::TwoSiteFiniteVMPS (FiniteMPS< TenElemT, QNT > &mps, const MPO< GQTensor< TenElemT, QNT >> &mpo, const SweepParams &sweep_params)
	Function to perform two-site update finite vMPS algorithm. More...
template<typename TenElemT , typename QNT >
void	gqmps2::InitEnvs (FiniteMPS< TenElemT, QNT > &mps, const MPO< GQTensor< TenElemT, QNT >> &mpo, const SweepParams &sweep_params)
template<typename TenElemT , typename QNT >
double	gqmps2::TwoSiteFiniteVMPSSweep (FiniteMPS< TenElemT, QNT > &mps, const MPO< GQTensor< TenElemT, QNT >> &mpo, const SweepParams &sweep_params)
	Function to perform a single two-site finite vMPS sweep. More...
template<typename TenElemT , typename QNT >
double	gqmps2::TwoSiteFiniteVMPSUpdate (FiniteMPS< TenElemT, QNT > &mps, TenVec< GQTensor< TenElemT, QNT >> &lenvs, TenVec< GQTensor< TenElemT, QNT >> &renvs, const MPO< GQTensor< TenElemT, QNT >> &mpo, const SweepParams &sweep_params, const char dir, const size_t target_site)
template<typename TenElemT , typename QNT >
void	gqmps2::LoadRelatedTens (FiniteMPS< TenElemT, QNT > &mps, TenVec< GQTensor< TenElemT, QNT >> &lenvs, TenVec< GQTensor< TenElemT, QNT >> &renvs, const size_t target_site, const char dir, const SweepParams &sweep_params)
template<typename TenElemT , typename QNT >
void	gqmps2::DumpRelatedTens (FiniteMPS< TenElemT, QNT > &mps, TenVec< GQTensor< TenElemT, QNT >> &lenvs, TenVec< GQTensor< TenElemT, QNT >> &renvs, const size_t target_site, const char dir, const SweepParams &sweep_params)

Detailed Description

Implementation details for two-site finite variational MPS algorithm.

Function Documentation

TwoSiteFiniteVMPS()

template<typename TenElemT , typename QNT >

GQTEN_Double gqmps2::TwoSiteFiniteVMPS	(	FiniteMPS< TenElemT, QNT > &	mps,
		const MPO< GQTensor< TenElemT, QNT >> &	mpo,
		const SweepParams &	sweep_params
	)

Function to perform two-site update finite vMPS algorithm.

Note

The input MPS will be considered an empty one.

TwoSiteFiniteVMPSSweep()

template<typename TenElemT , typename QNT >

double gqmps2::TwoSiteFiniteVMPSSweep	(	FiniteMPS< TenElemT, QNT > &	mps,
		const MPO< GQTensor< TenElemT, QNT >> &	mpo,
		const SweepParams &	sweep_params
	)

Function to perform a single two-site finite vMPS sweep.

Note

Before the sweep and after the sweep, the MPS is empty.